(function () {
  'use strict';
  var curPath = {};
  /**
   * Create a cached version of a pure function.
   */
  function cached(fn) {
    var cache = Object.create(null);
    return function cachedFn(str) {
      var hit = cache[str];
      return hit || (cache[str] = fn(str))
    }
  }

  /**
   * Hyphenate a camelCase string.
   */
  var hyphenate = cached(function (str) {
    return str.replace(/([A-Z])/g, function (m) {
      return '-' + m.toLowerCase();
    })
  });

  /**
   * Simple Object.assign polyfill
   */
  var merge =
    Object.assign ||
    function (to) {
      var arguments$1 = arguments;

      var hasOwn = Object.prototype.hasOwnProperty;

      for (var i = 1; i < arguments.length; i++) {
        var from = Object(arguments$1[i]);

        for (var key in from) {
          if (hasOwn.call(from, key)) {
            to[key] = from[key];
          }
        }
      }

      return to
    };

  /**
   * Check if value is primitive
   */
  function isPrimitive(value) {
    return typeof value === 'string' || typeof value === 'number'
  }

  /**
   * Perform no operation.
   */
  function noop() {}

  /**
   * Check if value is function
   */
  function isFn(obj) {
    return typeof obj === 'function'
  }

  var config = merge({
      el: '#app',
      repo: '',
      maxLevel: 6,
      subMaxLevel: 0,
      loadSidebar: null,
      loadNavbar: null,
      homepage: 'README.md',
      coverpage: '',
      basePath: '',
      auto2top: false,
      name: '',
      themeColor: '',
      nameLink: window.location.pathname,
      autoHeader: false,
      executeScript: null,
      noEmoji: false,
      ga: '',
      mergeNavbar: false,
      formatUpdated: '',
      externalLinkTarget: '_blank',
      routerMode: 'hash',
      noCompileLinks: []
    },
    window.$docsify
  );

  var script =
    document.currentScript || [].slice
    .call(document.getElementsByTagName('script'))
    .filter(function (n) {
      return /docsify\./.test(n.src);
    })[0];

  if (script) {
    for (var prop in config) {
      var val = script.getAttribute('data-' + hyphenate(prop));

      if (isPrimitive(val)) {
        config[prop] = val === '' ? true : val;
      }
    }

    if (config.loadSidebar === true) {
      config.loadSidebar = '_sidebar.md';
    }
    if (config.loadNavbar === true) {
      config.loadNavbar = '_navbar.md';
    }
    if (config.coverpage === true) {
      config.coverpage = '_coverpage.md';
    }
    if (config.repo === true) {
      config.repo = '';
    }
    if (config.name === true) {
      config.name = '';
    }
  }

  window.$docsify = config;

  function initLifecycle(vm) {
    var hooks = [
      'init',
      'mounted',
      'beforeEach',
      'afterEach',
      'doneEach',
      'ready'
    ];

    vm._hooks = {};
    vm._lifecycle = {};
    hooks.forEach(function (hook) {
      var arr = (vm._hooks[hook] = []);
      vm._lifecycle[hook] = function (fn) {
        return arr.push(fn);
      };
    });
  }

  function callHook(vm, hook, data, next) {
    if (next === void 0) next = noop;

    var queue = vm._hooks[hook];

    var step = function (index) {
      var hook = queue[index];
      if (index >= queue.length) {
        next(data);
      } else {
        if (typeof hook === 'function') {
          if (hook.length === 2) {
            hook(data, function (result) {
              data = result;
              step(index + 1);
            });
          } else {
            var result = hook(data);
            data = result !== undefined ? result : data;
            step(index + 1);
          }
        } else {
          step(index + 1);
        }
      }
    };

    step(0);
  }

  var cacheNode = {};

  /**
   * Get Node
   * @param  {String|Element} el
   * @param  {Boolean} noCache
   * @return {Element}
   */
  function getNode(el, noCache) {
    if (noCache === void 0) noCache = false;

    if (typeof el === 'string') {
      if (typeof window.Vue !== 'undefined') {
        return find(el)
      }
      el = noCache ? find(el) : (cacheNode[el] || (cacheNode[el] = find(el)));
    }

    return el
  }

  var $ = document;

  var body = $.body;

  var head = $.head;

  /**
   * Find element
   * @example
   * find('nav') => document.querySelector('nav')
   * find(nav, 'a') => nav.querySelector('a')
   */
  function find(el, node) {
    return node ? el.querySelector(node) : $.querySelector(el)
  }

  /**
   * Find all elements
   * @example
   * findAll('a') => [].slice.call(document.querySelectorAll('a'))
   * findAll(nav, 'a') => [].slice.call(nav.querySelectorAll('a'))
   */
  function findAll(el, node) {
    return [].slice.call(node ? el.querySelectorAll(node) : $.querySelectorAll(el))
  }

  function create(node, tpl) {
    node = $.createElement(node);
    if (tpl) {
      node.innerHTML = tpl;
    }
    return node
  }

  function appendTo(target, el) {
    return target.appendChild(el)
  }

  function before(target, el) {
    return target.insertBefore(el, target.children[0])
  }

  function on(el, type, handler) {
    isFn(type) ?
      window.addEventListener(el, type) :
      el.addEventListener(type, handler);
  }

  function off(el, type, handler) {
    isFn(type) ?
      window.removeEventListener(el, type) :
      el.removeEventListener(type, handler);
  }

  /**
   * Toggle class
   *
   * @example
   * toggleClass(el, 'active') => el.classList.toggle('active')
   * toggleClass(el, 'add', 'active') => el.classList.add('active')
   */
  function toggleClass(el, type, val) {
    el && el.classList[val ? type : 'toggle'](val || type);
  }

  function style(content) {
    appendTo(head, create('style', content));
  }



  var dom = Object.freeze({
    getNode: getNode,
    $: $,
    body: body,
    head: head,
    find: find,
    findAll: findAll,
    create: create,
    appendTo: appendTo,
    before: before,
    on: on,
    off: off,
    toggleClass: toggleClass,
    style: style
  });

  var inBrowser = typeof window !== 'undefined';

  var isMobile = inBrowser && document.body.clientWidth <= 600;

  /**
   * @see https://github.com/MoOx/pjax/blob/master/lib/is-supported.js
   */
  var supportsPushState =
    inBrowser &&
    (function () {
      // Borrowed wholesale from https://github.com/defunkt/jquery-pjax
      return (
        window.history &&
        window.history.pushState &&
        window.history.replaceState &&
        // pushState isn’t reliable on iOS until 5.
        !navigator.userAgent.match(
          /((iPod|iPhone|iPad).+\bOS\s+[1-4]\D|WebApps\/.+CFNetwork)/
        )
      )
    })();

  /**
   * Render github corner
   * @param  {Object} data
   * @return {String}
   */
  function corner(data) {
    if (!data) {
      return ''
    }
    if (!/\/\//.test(data)) {
      data = 'https://github.com/' + data;
    }
    data = data.replace(/^git\+/, '');

    return (
      "<a href=\"" + data + "\" class=\"github-corner\" aria-label=\"View source on Github\">" +
      '<svg viewBox="0 0 250 250" aria-hidden="true">' +
      '<path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path>' +
      '<path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path>' +
      '<path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path>' +
      '</svg>' +
      '</a>'
    )
  }

  /**
   * Render main content
   */
  function main(config) {
    var aside =
      '<button class="sidebar-toggle">' +
      '<div class="sidebar-toggle-button">' +
      '<span></span><span></span><span></span>' +
      '</div>' +
      '</button>' +
      '<aside class="sidebar">' +
      (config.name ?
        ("<h1><a class=\"app-name-link\" data-nosearch>" + (config.name) + "</a></h1>") :
        '') +
      '<div class="sidebar-nav"><!--sidebar--></div>' +
      '</aside>';

    return (
      (isMobile ? (aside + "<main>") : ("<main>" + aside)) +
      '<section class="content">' +
      '<article class="markdown-section" id="main"><!--main--></article>' +
      '</section>' +
      '</main>'
    )
  }

  /**
   * Cover Page
   */
  function cover() {
    var SL = ', 100%, 85%';
    var bgc =
      'linear-gradient(to left bottom, ' +
      "hsl(" + (Math.floor(Math.random() * 255) + SL) + ") 0%," +
      "hsl(" + (Math.floor(Math.random() * 255) + SL) + ") 100%)";

    return (
      "<section class=\"cover\" style=\"background: " + bgc + "\">" +
      '<div class="cover-main"></div>' +
      '<div class="mask"></div>' +
      '</section>'
    )
  }

  /**
   * Render tree
   * @param  {Array} tree
   * @param  {String} tpl
   * @return {String}
   */
  function tree(toc, tpl) {
    if (tpl === void 0) tpl = '';

    if (!toc || !toc.length) {
      return ''
    }

    toc.forEach(function (node) {
      tpl += "<li><a class=\"section-link\" href=\"" + (node.slug) + "\">" + (node.title) + "</a></li>";
      if (node.children) {
        tpl += "<li><ul class=\"children\">" + (tree(node.children)) + "</li></ul>";
      }
    });

    return tpl
  }

  function helper(className, content) {
    return ("<p class=\"" + className + "\">" + (content.slice(5).trim()) + "</p>")
  }

  function theme(color) {
    return ("<style>:root{--theme-color: " + color + ";}</style>")
  }

  var barEl;
  var timeId;

  /**
   * Init progress component
   */
  function init() {
    var div = create('div');

    div.classList.add('progress');
    appendTo(body, div);
    barEl = div;
  }
  /**
   * Render progress bar
   */
  var progressbar = function (ref) {
    var loaded = ref.loaded;
    var total = ref.total;
    var step = ref.step;

    var num;

    !barEl && init();

    if (step) {
      num = parseInt(barEl.style.width || 0, 10) + step;
      num = num > 80 ? 80 : num;
    } else {
      num = Math.floor(loaded / total * 100);
    }

    barEl.style.opacity = 1;
    barEl.style.width = num >= 95 ? '100%' : num + '%';

    if (num >= 95) {
      clearTimeout(timeId);
      timeId = setTimeout(function (_) {
        barEl.style.opacity = 0;
        barEl.style.width = '0%';
      }, 200);
    }
  };

  var cache = {};

  /**
   * Simple ajax get
   * @param {string} url
   * @param {boolean} [hasBar=false] has progress bar
   * @return { then(resolve, reject), abort }
   */
  function get(url, hasBar) {
    if (hasBar === void 0) hasBar = false;

    var xhr = new XMLHttpRequest();
    var on = function () {
      xhr.addEventListener.apply(xhr, arguments);
    };
    var cached$$1 = cache[url];

    if (cached$$1) {
      return {
        then: function (cb) {
          return cb(cached$$1.content, cached$$1.opt);
        },
        abort: noop
      }
    }

    xhr.open('GET', url);
    xhr.send();

    return {
      then: function (success, error) {
        if (error === void 0) error = noop;

        if (hasBar) {
          var id = setInterval(
            function (_) {
              return progressbar({
                step: Math.floor(Math.random() * 5 + 1)
              });
            },
            500
          );

          on('progress', progressbar);
          on('loadend', function (evt) {
            progressbar(evt);
            clearInterval(id);
          });
        }

        on('error', error);
        on('load', function (ref) {
          var target = ref.target;

          if (target.status >= 400) {
            error(target);
          } else {
            var result = (cache[url] = {
              content: target.response,
              opt: {
                updatedAt: xhr.getResponseHeader('last-modified')
              }
            });

            success(result.content, result.opt);
          }
        });
      },
      abort: function (_) {
        return xhr.readyState !== 4 && xhr.abort();
      }
    }
  }

  function replaceVar(block, color) {
    block.innerHTML = block.innerHTML.replace(
      /var\(\s*--theme-color.*?\)/g,
      color
    );
  }

  var cssVars = function (color) {
    // Variable support
    if (window.CSS && window.CSS.supports && window.CSS.supports('(--v:red)')) {
      return
    }

    var styleBlocks = findAll('style:not(.inserted),link');
    [].forEach.call(styleBlocks, function (block) {
      if (block.nodeName === 'STYLE') {
        replaceVar(block, color);
      } else if (block.nodeName === 'LINK') {
        var href = block.getAttribute('href');

        if (!/\.css$/.test(href)) {
          return
        }

        get(href).then(function (res) {
          var style$$1 = create('style', res);

          head.appendChild(style$$1);
          replaceVar(style$$1, color);
        });
      }
    });
  };

  var RGX = /([^{]*?)\w(?=\})/g;

  var dict = {
    YYYY: 'getFullYear',
    YY: 'getYear',
    MM: function (d) {
      return d.getMonth() + 1;
    },
    DD: 'getDate',
    HH: 'getHours',
    mm: 'getMinutes',
    ss: 'getSeconds'
  };

  var tinydate = function (str) {
    var parts = [],
      offset = 0;
    str.replace(RGX, function (key, _, idx) {
      // save preceding string
      parts.push(str.substring(offset, idx - 1));
      offset = idx += key.length + 1;
      // save function
      parts.push(function (d) {
        return ('00' + (typeof dict[key] === 'string' ? d[dict[key]]() : dict[key](d))).slice(-key.length);
      });
    });

    if (offset !== str.length) {
      parts.push(str.substring(offset));
    }

    return function (arg) {
      var out = '',
        i = 0,
        d = arg || new Date();
      for (; i < parts.length; i++) {
        out += (typeof parts[i] === 'string') ? parts[i] : parts[i](d);
      }
      return out;
    };
  };

  var commonjsGlobal = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};





  function createCommonjsModule(fn, module) {
    return module = {
      exports: {}
    }, fn(module, module.exports), module.exports;
  }

  var marked = createCommonjsModule(function (module, exports) {
    /**
     * marked - a markdown parser
     * Copyright (c) 2011-2014, Christopher Jeffrey. (MIT Licensed)
     * https://github.com/chjj/marked
     */

    (function () {

      /**
       * Block-Level Grammar
       */

      var block = {
        newline: /^\n+/,
        code: /^( {4}[^\n]+\n*)+/,
        fences: noop,
        hr: /^( *[-*_]){3,} *(?:\n+|$)/,
        heading: /^ *(#{1,6}) *([^\n]+?) *#* *(?:\n+|$)/,
        nptable: noop,
        lheading: /^([^\n]+)\n *(=|-){2,} *(?:\n+|$)/,
        blockquote: /^( *>[^\n]+(\n(?!def)[^\n]+)*\n*)+/,
        list: /^( *)(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,
        html: /^ *(?:comment *(?:\n|\s*$)|closed *(?:\n{2,}|\s*$)|closing *(?:\n{2,}|\s*$))/,
        def: /^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +["(]([^\n]+)[")])? *(?:\n+|$)/,
        table: noop,
        paragraph: /^((?:[^\n]+\n?(?!hr|heading|lheading|blockquote|tag|def))+)\n*/,
        text: /^[^\n]+/
      };

      block.bullet = /(?:[*+-]|\d+\.)/;
      block.item = /^( *)(bull) [^\n]*(?:\n(?!\1bull )[^\n]*)*/;
      block.item = replace(block.item, 'gm')
        (/bull/g, block.bullet)
        ();

      block.list = replace(block.list)
        (/bull/g, block.bullet)
        ('hr', '\\n+(?=\\1?(?:[-*_] *){3,}(?:\\n+|$))')
        ('def', '\\n+(?=' + block.def.source + ')')
        ();

      block.blockquote = replace(block.blockquote)
        ('def', block.def)
        ();

      block._tag = '(?!(?:' +
        'a|em|strong|small|s|cite|q|dfn|abbr|data|time|code' +
        '|var|samp|kbd|sub|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo' +
        '|span|br|wbr|ins|del|img)\\b)\\w+(?!:/|[^\\w\\s@]*@)\\b';

      block.html = replace(block.html)
        ('comment', /<!--[\s\S]*?-->/)
        ('closed', /<(tag)[\s\S]+?<\/\1>/)
        ('closing', /<tag(?:"[^"]*"|'[^']*'|[^'">])*?>/)
        (/tag/g, block._tag)
        ();

      block.paragraph = replace(block.paragraph)
        ('hr', block.hr)
        ('heading', block.heading)
        ('lheading', block.lheading)
        ('blockquote', block.blockquote)
        ('tag', '<' + block._tag)
        ('def', block.def)
        ();

      /**
       * Normal Block Grammar
       */

      block.normal = merge({}, block);

      /**
       * GFM Block Grammar
       */

      block.gfm = merge({}, block.normal, {
        fences: /^ *(`{3,}|~{3,})[ \.]*(\S+)? *\n([\s\S]*?)\s*\1 *(?:\n+|$)/,
        paragraph: /^/,
        heading: /^ *(#{1,6}) +([^\n]+?) *#* *(?:\n+|$)/
      });

      block.gfm.paragraph = replace(block.paragraph)
        ('(?!', '(?!' +
          block.gfm.fences.source.replace('\\1', '\\2') + '|' +
          block.list.source.replace('\\1', '\\3') + '|')
        ();

      /**
       * GFM + Tables Block Grammar
       */

      block.tables = merge({}, block.gfm, {
        nptable: /^ *(\S.*\|.*)\n *([-:]+ *\|[-| :]*)\n((?:.*\|.*(?:\n|$))*)\n*/,
        table: /^ *\|(.+)\n *\|( *[-:]+[-| :]*)\n((?: *\|.*(?:\n|$))*)\n*/
      });

      /**
       * Block Lexer
       */

      function Lexer(options) {
        this.tokens = [];
        this.tokens.links = {};
        this.options = options || marked.defaults;
        this.rules = block.normal;

        if (this.options.gfm) {
          if (this.options.tables) {
            this.rules = block.tables;
          } else {
            this.rules = block.gfm;
          }
        }
      }

      /**
       * Expose Block Rules
       */

      Lexer.rules = block;

      /**
       * Static Lex Method
       */

      Lexer.lex = function (src, options) {
        var lexer = new Lexer(options);
        return lexer.lex(src);
      };

      /**
       * Preprocessing
       */

      Lexer.prototype.lex = function (src) {
        src = src
          .replace(/\r\n|\r/g, '\n')
          .replace(/\t/g, '    ')
          .replace(/\u00a0/g, ' ')
          .replace(/\u2424/g, '\n');

        return this.token(src, true);
      };

      /**
       * Lexing
       */

      Lexer.prototype.token = function (src, top, bq) {
        var this$1 = this;

        var src = src.replace(/^ +$/gm, ''),
          next, loose, cap, bull, b, item, space, i, l;

        while (src) {
          // newline
          if (cap = this$1.rules.newline.exec(src)) {
            src = src.substring(cap[0].length);
            if (cap[0].length > 1) {
              this$1.tokens.push({
                type: 'space'
              });
            }
          }

          // code
          if (cap = this$1.rules.code.exec(src)) {
            src = src.substring(cap[0].length);
            cap = cap[0].replace(/^ {4}/gm, '');
            this$1.tokens.push({
              type: 'code',
              text: !this$1.options.pedantic ?
                cap.replace(/\n+$/, '') : cap
            });
            continue;
          }

          // fences (gfm)
          if (cap = this$1.rules.fences.exec(src)) {
            src = src.substring(cap[0].length);
            this$1.tokens.push({
              type: 'code',
              lang: cap[2],
              text: cap[3] || ''
            });
            continue;
          }

          // heading
          if (cap = this$1.rules.heading.exec(src)) {
            src = src.substring(cap[0].length);
            this$1.tokens.push({
              type: 'heading',
              depth: cap[1].length,
              text: cap[2]
            });
            continue;
          }

          // table no leading pipe (gfm)
          if (top && (cap = this$1.rules.nptable.exec(src))) {
            src = src.substring(cap[0].length);

            item = {
              type: 'table',
              header: cap[1].replace(/^ *| *\| *$/g, '').split(/ *\| */),
              align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
              cells: cap[3].replace(/\n$/, '').split('\n')
            };

            for (i = 0; i < item.align.length; i++) {
              if (/^ *-+: *$/.test(item.align[i])) {
                item.align[i] = 'right';
              } else if (/^ *:-+: *$/.test(item.align[i])) {
                item.align[i] = 'center';
              } else if (/^ *:-+ *$/.test(item.align[i])) {
                item.align[i] = 'left';
              } else {
                item.align[i] = null;
              }
            }

            for (i = 0; i < item.cells.length; i++) {
              item.cells[i] = item.cells[i].split(/ *\| */);
            }

            this$1.tokens.push(item);

            continue;
          }

          // lheading
          if (cap = this$1.rules.lheading.exec(src)) {
            src = src.substring(cap[0].length);
            this$1.tokens.push({
              type: 'heading',
              depth: cap[2] === '=' ? 1 : 2,
              text: cap[1]
            });
            continue;
          }

          // hr
          if (cap = this$1.rules.hr.exec(src)) {
            src = src.substring(cap[0].length);
            this$1.tokens.push({
              type: 'hr'
            });
            continue;
          }

          // blockquote
          if (cap = this$1.rules.blockquote.exec(src)) {
            src = src.substring(cap[0].length);

            this$1.tokens.push({
              type: 'blockquote_start'
            });

            cap = cap[0].replace(/^ *> ?/gm, '');

            // Pass `top` to keep the current
            // "toplevel" state. This is exactly
            // how markdown.pl works.
            this$1.token(cap, top, true);

            this$1.tokens.push({
              type: 'blockquote_end'
            });

            continue;
          }

          // list
          if (cap = this$1.rules.list.exec(src)) {
            src = src.substring(cap[0].length);
            bull = cap[2];

            this$1.tokens.push({
              type: 'list_start',
              ordered: bull.length > 1
            });

            // Get each top-level item.
            cap = cap[0].match(this$1.rules.item);

            next = false;
            l = cap.length;
            i = 0;

            for (; i < l; i++) {
              item = cap[i];

              // Remove the list item's bullet
              // so it is seen as the next token.
              space = item.length;
              item = item.replace(/^ *([*+-]|\d+\.) +/, '');

              // Outdent whatever the
              // list item contains. Hacky.
              if (~item.indexOf('\n ')) {
                space -= item.length;
                item = !this$1.options.pedantic ?
                  item.replace(new RegExp('^ {1,' + space + '}', 'gm'), '') :
                  item.replace(/^ {1,4}/gm, '');
              }

              // Determine whether the next list item belongs here.
              // Backpedal if it does not belong in this list.
              if (this$1.options.smartLists && i !== l - 1) {
                b = block.bullet.exec(cap[i + 1])[0];
                if (bull !== b && !(bull.length > 1 && b.length > 1)) {
                  src = cap.slice(i + 1).join('\n') + src;
                  i = l - 1;
                }
              }

              // Determine whether item is loose or not.
              // Use: /(^|\n)(?! )[^\n]+\n\n(?!\s*$)/
              // for discount behavior.
              loose = next || /\n\n(?!\s*$)/.test(item);
              if (i !== l - 1) {
                next = item.charAt(item.length - 1) === '\n';
                if (!loose) {
                  loose = next;
                }
              }

              this$1.tokens.push({
                type: loose ?
                  'loose_item_start' : 'list_item_start'
              });

              // Recurse.
              this$1.token(item, false, bq);

              this$1.tokens.push({
                type: 'list_item_end'
              });
            }

            this$1.tokens.push({
              type: 'list_end'
            });

            continue;
          }

          // html
          if (cap = this$1.rules.html.exec(src)) {
            src = src.substring(cap[0].length);
            this$1.tokens.push({
              type: this$1.options.sanitize ?
                'paragraph' : 'html',
              pre: !this$1.options.sanitizer &&
                (cap[1] === 'pre' || cap[1] === 'script' || cap[1] === 'style'),
              text: cap[0]
            });
            continue;
          }

          // def
          if ((!bq && top) && (cap = this$1.rules.def.exec(src))) {
            src = src.substring(cap[0].length);
            this$1.tokens.links[cap[1].toLowerCase()] = {
              href: cap[2],
              title: cap[3]
            };
            continue;
          }

          // table (gfm)
          if (top && (cap = this$1.rules.table.exec(src))) {
            src = src.substring(cap[0].length);

            item = {
              type: 'table',
              header: cap[1].replace(/^ *| *\| *$/g, '').split(/ *\| */),
              align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
              cells: cap[3].replace(/(?: *\| *)?\n$/, '').split('\n')
            };

            for (i = 0; i < item.align.length; i++) {
              if (/^ *-+: *$/.test(item.align[i])) {
                item.align[i] = 'right';
              } else if (/^ *:-+: *$/.test(item.align[i])) {
                item.align[i] = 'center';
              } else if (/^ *:-+ *$/.test(item.align[i])) {
                item.align[i] = 'left';
              } else {
                item.align[i] = null;
              }
            }

            for (i = 0; i < item.cells.length; i++) {
              item.cells[i] = item.cells[i]
                .replace(/^ *\| *| *\| *$/g, '')
                .split(/ *\| */);
            }

            this$1.tokens.push(item);

            continue;
          }

          // top-level paragraph
          if (top && (cap = this$1.rules.paragraph.exec(src))) {
            src = src.substring(cap[0].length);
            this$1.tokens.push({
              type: 'paragraph',
              text: cap[1].charAt(cap[1].length - 1) === '\n' ?
                cap[1].slice(0, -1) : cap[1]
            });
            continue;
          }

          // text
          if (cap = this$1.rules.text.exec(src)) {
            // Top-level should never reach here.
            src = src.substring(cap[0].length);
            this$1.tokens.push({
              type: 'text',
              text: cap[0]
            });
            continue;
          }

          if (src) {
            throw new
            Error('Infinite loop on byte: ' + src.charCodeAt(0));
          }
        }

        return this.tokens;
      };

      /**
       * Inline-Level Grammar
       */

      var inline = {
        escape: /^\\([\\`*{}\[\]()#+\-.!_>])/,
        autolink: /^<([^ >]+(@|:\/)[^ >]+)>/,
        url: noop,
        tag: /^<!--[\s\S]*?-->|^<\/?\w+(?:"[^"]*"|'[^']*'|[^'">])*?>/,
        link: /^!?\[(inside)\]\(href\)/,
        reflink: /^!?\[(inside)\]\s*\[([^\]]*)\]/,
        nolink: /^!?\[((?:\[[^\]]*\]|[^\[\]])*)\]/,
        strong: /^__([\s\S]+?)__(?!_)|^\*\*([\s\S]+?)\*\*(?!\*)/,
        em: /^\b_((?:[^_]|__)+?)_\b|^\*((?:\*\*|[\s\S])+?)\*(?!\*)/,
        code: /^(`+)\s*([\s\S]*?[^`])\s*\1(?!`)/,
        br: /^ {2,}\n(?!\s*$)/,
        del: noop,
        text: /^[\s\S]+?(?=[\\<!\[_*`]| {2,}\n|$)/
      };

      inline._inside = /(?:\[[^\]]*\]|[^\[\]]|\](?=[^\[]*\]))*/;
      inline._href = /\s*<?([\s\S]*?)>?(?:\s+['"]([\s\S]*?)['"])?\s*/;

      inline.link = replace(inline.link)
        ('inside', inline._inside)
        ('href', inline._href)
        ();

      inline.reflink = replace(inline.reflink)
        ('inside', inline._inside)
        ();

      /**
       * Normal Inline Grammar
       */

      inline.normal = merge({}, inline);

      /**
       * Pedantic Inline Grammar
       */

      inline.pedantic = merge({}, inline.normal, {
        strong: /^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,
        em: /^_(?=\S)([\s\S]*?\S)_(?!_)|^\*(?=\S)([\s\S]*?\S)\*(?!\*)/
      });

      /**
       * GFM Inline Grammar
       */

      inline.gfm = merge({}, inline.normal, {
        escape: replace(inline.escape)('])', '~|])')(),
        url: /^(https?:\/\/[^\s<]+[^<.,:;"')\]\s])/,
        del: /^~~(?=\S)([\s\S]*?\S)~~/,
        text: replace(inline.text)
          (']|', '~]|')
          ('|', '|https?://|')
          ()
      });

      /**
       * GFM + Line Breaks Inline Grammar
       */

      inline.breaks = merge({}, inline.gfm, {
        br: replace(inline.br)('{2,}', '*')(),
        text: replace(inline.gfm.text)('{2,}', '*')()
      });

      /**
       * Inline Lexer & Compiler
       */

      function InlineLexer(links, options) {
        this.options = options || marked.defaults;
        this.links = links;
        this.rules = inline.normal;
        this.renderer = this.options.renderer || new Renderer;
        this.renderer.options = this.options;

        if (!this.links) {
          throw new
          Error('Tokens array requires a `links` property.');
        }

        if (this.options.gfm) {
          if (this.options.breaks) {
            this.rules = inline.breaks;
          } else {
            this.rules = inline.gfm;
          }
        } else if (this.options.pedantic) {
          this.rules = inline.pedantic;
        }
      }

      /**
       * Expose Inline Rules
       */

      InlineLexer.rules = inline;

      /**
       * Static Lexing/Compiling Method
       */

      InlineLexer.output = function (src, links, options) {
        var inline = new InlineLexer(links, options);
        return inline.output(src);
      };

      /**
       * Lexing/Compiling
       */

      InlineLexer.prototype.output = function (src) {
        var this$1 = this;

        var out = '',
          link, text, href, cap;

        while (src) {
          // escape
          if (cap = this$1.rules.escape.exec(src)) {
            src = src.substring(cap[0].length);
            out += cap[1];
            continue;
          }

          // autolink
          if (cap = this$1.rules.autolink.exec(src)) {
            src = src.substring(cap[0].length);
            if (cap[2] === '@') {
              text = cap[1].charAt(6) === ':' ?
                this$1.mangle(cap[1].substring(7)) :
                this$1.mangle(cap[1]);
              href = this$1.mangle('mailto:') + text;
            } else {
              text = escape(cap[1]);
              href = text;
            }
            out += this$1.renderer.link(href, null, text);
            continue;
          }

          // url (gfm)
          if (!this$1.inLink && (cap = this$1.rules.url.exec(src))) {
            src = src.substring(cap[0].length);
            text = escape(cap[1]);
            href = text;
            out += this$1.renderer.link(href, null, text);
            continue;
          }

          // tag
          if (cap = this$1.rules.tag.exec(src)) {
            if (!this$1.inLink && /^<a /i.test(cap[0])) {
              this$1.inLink = true;
            } else if (this$1.inLink && /^<\/a>/i.test(cap[0])) {
              this$1.inLink = false;
            }
            src = src.substring(cap[0].length);
            out += this$1.options.sanitize ?
              this$1.options.sanitizer ?
              this$1.options.sanitizer(cap[0]) :
              escape(cap[0]) :
              cap[0];
            continue;
          }

          // link
          if (cap = this$1.rules.link.exec(src)) {
            src = src.substring(cap[0].length);
            this$1.inLink = true;
            out += this$1.outputLink(cap, {
              href: cap[2],
              title: cap[3]
            });
            this$1.inLink = false;
            continue;
          }

          // reflink, nolink
          if ((cap = this$1.rules.reflink.exec(src)) ||
            (cap = this$1.rules.nolink.exec(src))) {
            src = src.substring(cap[0].length);
            link = (cap[2] || cap[1]).replace(/\s+/g, ' ');
            link = this$1.links[link.toLowerCase()];
            if (!link || !link.href) {
              out += cap[0].charAt(0);
              src = cap[0].substring(1) + src;
              continue;
            }
            this$1.inLink = true;
            out += this$1.outputLink(cap, link);
            this$1.inLink = false;
            continue;
          }

          // strong
          if (cap = this$1.rules.strong.exec(src)) {
            src = src.substring(cap[0].length);
            out += this$1.renderer.strong(this$1.output(cap[2] || cap[1]));
            continue;
          }

          // em
          if (cap = this$1.rules.em.exec(src)) {
            src = src.substring(cap[0].length);
            out += this$1.renderer.em(this$1.output(cap[2] || cap[1]));
            continue;
          }

          // code
          if (cap = this$1.rules.code.exec(src)) {
            src = src.substring(cap[0].length);
            out += this$1.renderer.codespan(escape(cap[2], true));
            continue;
          }

          // br
          if (cap = this$1.rules.br.exec(src)) {
            src = src.substring(cap[0].length);
            out += this$1.renderer.br();
            continue;
          }

          // del (gfm)
          if (cap = this$1.rules.del.exec(src)) {
            src = src.substring(cap[0].length);
            out += this$1.renderer.del(this$1.output(cap[1]));
            continue;
          }

          // text
          if (cap = this$1.rules.text.exec(src)) {
            src = src.substring(cap[0].length);
            out += this$1.renderer.text(escape(this$1.smartypants(cap[0])));
            continue;
          }

          if (src) {
            throw new
            Error('Infinite loop on byte: ' + src.charCodeAt(0));
          }
        }

        return out;
      };

      /**
       * Compile Link
       */

      InlineLexer.prototype.outputLink = function (cap, link) {
        var href = escape(link.href),
          title = link.title ? escape(link.title) : null;

        return cap[0].charAt(0) !== '!' ?
          this.renderer.link(href, title, this.output(cap[1])) :
          this.renderer.image(href, title, escape(cap[1]));
      };

      /**
       * Smartypants Transformations
       */

      InlineLexer.prototype.smartypants = function (text) {
        if (!this.options.smartypants) {
          return text;
        }
        return text
          // em-dashes
          .replace(/---/g, '\u2014')
          // en-dashes
          .replace(/--/g, '\u2013')
          // opening singles
          .replace(/(^|[-\u2014/(\[{"\s])'/g, '$1\u2018')
          // closing singles & apostrophes
          .replace(/'/g, '\u2019')
          // opening doubles
          .replace(/(^|[-\u2014/(\[{\u2018\s])"/g, '$1\u201c')
          // closing doubles
          .replace(/"/g, '\u201d')
          // ellipses
          .replace(/\.{3}/g, '\u2026');
      };

      /**
       * Mangle Links
       */

      InlineLexer.prototype.mangle = function (text) {
        if (!this.options.mangle) {
          return text;
        }
        var out = '',
          l = text.length,
          i = 0,
          ch;

        for (; i < l; i++) {
          ch = text.charCodeAt(i);
          if (Math.random() > 0.5) {
            ch = 'x' + ch.toString(16);
          }
          out += '&#' + ch + ';';
        }

        return out;
      };

      /**
       * Renderer
       */

      function Renderer(options) {
        this.options = options || {};
      }

      Renderer.prototype.code = function (code, lang, escaped) {
        if (this.options.highlight) {
          var out = this.options.highlight(code, lang);
          if (out != null && out !== code) {
            escaped = true;
            code = out;
          }
        }

        if (!lang) {
          return '<pre><code>' +
            (escaped ? code : escape(code, true)) +
            '\n</code></pre>';
        }

        return '<pre><code class="' +
          this.options.langPrefix +
          escape(lang, true) +
          '">' +
          (escaped ? code : escape(code, true)) +
          '\n</code></pre>\n';
      };

      Renderer.prototype.blockquote = function (quote) {
        return '<blockquote>\n' + quote + '</blockquote>\n';
      };

      Renderer.prototype.html = function (html) {
        return html;
      };

      Renderer.prototype.heading = function (text, level, raw) {
        return '<h' +
          level +
          ' id="' +
          this.options.headerPrefix +
          raw.toLowerCase().replace(/[^\w]+/g, '-') +
          '">' +
          text +
          '</h' +
          level +
          '>\n';
      };

      Renderer.prototype.hr = function () {
        return this.options.xhtml ? '<hr/>\n' : '<hr>\n';
      };

      Renderer.prototype.list = function (body, ordered) {
        var type = ordered ? 'ol' : 'ul';
        return '<' + type + '>\n' + body + '</' + type + '>\n';
      };

      Renderer.prototype.listitem = function (text) {
        return '<li>' + text + '</li>\n';
      };

      Renderer.prototype.paragraph = function (text) {
        return '<p>' + text + '</p>\n';
      };

      Renderer.prototype.table = function (header, body) {
        return '<table>\n' +
          '<thead>\n' +
          header +
          '</thead>\n' +
          '<tbody>\n' +
          body +
          '</tbody>\n' +
          '</table>\n';
      };

      Renderer.prototype.tablerow = function (content) {
        return '<tr>\n' + content + '</tr>\n';
      };

      Renderer.prototype.tablecell = function (content, flags) {
        var type = flags.header ? 'th' : 'td';
        var tag = flags.align ?
          '<' + type + ' style="text-align:' + flags.align + '">' :
          '<' + type + '>';
        return tag + content + '</' + type + '>\n';
      };

      // span level renderer
      Renderer.prototype.strong = function (text) {
        return '<strong>' + text + '</strong>';
      };

      Renderer.prototype.em = function (text) {
        return '<em>' + text + '</em>';
      };

      Renderer.prototype.codespan = function (text) {
        return '<code>' + text + '</code>';
      };

      Renderer.prototype.br = function () {
        return this.options.xhtml ? '<br/>' : '<br>';
      };

      Renderer.prototype.del = function (text) {
        return '<del>' + text + '</del>';
      };

      Renderer.prototype.link = function (href, title, text) {
        console.log('link');
        if (this.options.sanitize) {
          try {
            var prot = decodeURIComponent(unescape(href))
              .replace(/[^\w:]/g, '')
              .toLowerCase();
          } catch (e) {
            return '';
          }
          if (prot.indexOf('javascript:') === 0 || prot.indexOf('vbscript:') === 0) {
            return '';
          }
        }
        var out = '<a href="' + href + '"';
        if (title) {
          out += ' title="' + title + '"';
        }
        out += '>' + text + '</a>';
        return out;
      };

      Renderer.prototype.image = function (href, title, text) {
        var out = '<img src="' + href + '" alt="' + text + '"';
        if (title) {
          out += ' title="' + title + '"';
        }
        out += this.options.xhtml ? '/>' : '>';
        return out;
      };

      Renderer.prototype.text = function (text) {
        return text;
      };

      /**
       * Parsing & Compiling
       */

      function Parser(options) {
        this.tokens = [];
        this.token = null;
        this.options = options || marked.defaults;
        this.options.renderer = this.options.renderer || new Renderer;
        this.renderer = this.options.renderer;
        this.renderer.options = this.options;
      }

      /**
       * Static Parse Method
       */

      Parser.parse = function (src, options, renderer) {
        var parser = new Parser(options, renderer);
        return parser.parse(src);
      };

      /**
       * Parse Loop
       */

      Parser.prototype.parse = function (src) {
        var this$1 = this;

        this.inline = new InlineLexer(src.links, this.options, this.renderer);
        this.tokens = src.reverse();

        var out = '';
        while (this.next()) {
          out += this$1.tok();
        }

        return out;
      };

      /**
       * Next Token
       */

      Parser.prototype.next = function () {
        return this.token = this.tokens.pop();
      };

      /**
       * Preview Next Token
       */

      Parser.prototype.peek = function () {
        return this.tokens[this.tokens.length - 1] || 0;
      };

      /**
       * Parse Text Tokens
       */

      Parser.prototype.parseText = function () {
        var this$1 = this;

        var body = this.token.text;

        while (this.peek().type === 'text') {
          body += '\n' + this$1.next().text;
        }

        return this.inline.output(body);
      };

      /**
       * Parse Current Token
       */

      Parser.prototype.tok = function () {
        var this$1 = this;

        switch (this.token.type) {
          case 'space':
            {
              return '';
            }
          case 'hr':
            {
              return this.renderer.hr();
            }
          case 'heading':
            {
              return this.renderer.heading(
                this.inline.output(this.token.text),
                this.token.depth,
                this.token.text);
            }
          case 'code':
            {
              return this.renderer.code(this.token.text,
                this.token.lang,
                this.token.escaped);
            }
          case 'table':
            {
              var header = '',
                body = '',
                i, row, cell, flags, j;

              // header
              cell = '';
              for (i = 0; i < this.token.header.length; i++) {
                flags = {
                  header: true,
                  align: this$1.token.align[i]
                };
                cell += this$1.renderer.tablecell(
                  this$1.inline.output(this$1.token.header[i]), {
                    header: true,
                    align: this$1.token.align[i]
                  }
                );
              }
              header += this.renderer.tablerow(cell);

              for (i = 0; i < this.token.cells.length; i++) {
                row = this$1.token.cells[i];

                cell = '';
                for (j = 0; j < row.length; j++) {
                  cell += this$1.renderer.tablecell(
                    this$1.inline.output(row[j]), {
                      header: false,
                      align: this$1.token.align[j]
                    }
                  );
                }

                body += this$1.renderer.tablerow(cell);
              }
              return this.renderer.table(header, body);
            }
          case 'blockquote_start':
            {
              var body = '';

              while (this.next().type !== 'blockquote_end') {
                body += this$1.tok();
              }

              return this.renderer.blockquote(body);
            }
          case 'list_start':
            {
              var body = '',
                ordered = this.token.ordered;

              while (this.next().type !== 'list_end') {
                body += this$1.tok();
              }

              return this.renderer.list(body, ordered);
            }
          case 'list_item_start':
            {
              var body = '';

              while (this.next().type !== 'list_item_end') {
                body += this$1.token.type === 'text' ?
                  this$1.parseText() :
                  this$1.tok();
              }

              return this.renderer.listitem(body);
            }
          case 'loose_item_start':
            {
              var body = '';

              while (this.next().type !== 'list_item_end') {
                body += this$1.tok();
              }

              return this.renderer.listitem(body);
            }
          case 'html':
            {
              var html = !this.token.pre && !this.options.pedantic ?
                this.inline.output(this.token.text) : this.token.text;
              return this.renderer.html(html);
            }
          case 'paragraph':
            {
              return this.renderer.paragraph(this.inline.output(this.token.text));
            }
          case 'text':
            {
              return this.renderer.paragraph(this.parseText());
            }
        }
      };

      /**
       * Helpers
       */

      function escape(html, encode) {
        return html
          .replace(!encode ? /&(?!#?\w+;)/g : /&/g, '&amp;')
          .replace(/</g, '&lt;')
          .replace(/>/g, '&gt;')
          .replace(/"/g, '&quot;')
          .replace(/'/g, '&#39;');
      }

      function unescape(html) {
        // explicitly match decimal, hex, and named HTML entities 
        return html.replace(/&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/g, function (_, n) {
          n = n.toLowerCase();
          if (n === 'colon') {
            return ':';
          }
          if (n.charAt(0) === '#') {
            return n.charAt(1) === 'x' ?
              String.fromCharCode(parseInt(n.substring(2), 16)) :
              String.fromCharCode(+n.substring(1));
          }
          return '';
        });
      }

      function replace(regex, opt) {
        regex = regex.source;
        opt = opt || '';
        return function self(name, val) {
          if (!name) {
            return new RegExp(regex, opt);
          }
          val = val.source || val;
          val = val.replace(/(^|[^\[])\^/g, '$1');
          regex = regex.replace(name, val);
          return self;
        };
      }

      function noop() {}
      noop.exec = noop;

      function merge(obj) {
        var arguments$1 = arguments;

        var i = 1,
          target, key;

        for (; i < arguments.length; i++) {
          target = arguments$1[i];
          for (key in target) {
            if (Object.prototype.hasOwnProperty.call(target, key)) {
              obj[key] = target[key];
            }
          }
        }

        return obj;
      }


      /**
       * Marked
       */

      function marked(src, opt, callback) {
        if (callback || typeof opt === 'function') {
          if (!callback) {
            callback = opt;
            opt = null;
          }

          opt = merge({}, marked.defaults, opt || {});

          var highlight = opt.highlight,
            tokens, pending, i = 0;

          try {
            tokens = Lexer.lex(src, opt);
          } catch (e) {
            return callback(e);
          }

          pending = tokens.length;

          var done = function (err) {
            if (err) {
              opt.highlight = highlight;
              return callback(err);
            }

            var out;

            try {
              out = Parser.parse(tokens, opt);
            } catch (e) {
              err = e;
            }

            opt.highlight = highlight;

            return err ?
              callback(err) :
              callback(null, out);
          };

          if (!highlight || highlight.length < 3) {
            return done();
          }

          delete opt.highlight;

          if (!pending) {
            return done();
          }

          for (; i < tokens.length; i++) {
            (function (token) {
              if (token.type !== 'code') {
                return --pending || done();
              }
              return highlight(token.text, token.lang, function (err, code) {
                if (err) {
                  return done(err);
                }
                if (code == null || code === token.text) {
                  return --pending || done();
                }
                token.text = code;
                token.escaped = true;
                --pending || done();
              });
            })(tokens[i]);
          }

          return;
        }
        try {
          if (opt) {
            opt = merge({}, marked.defaults, opt);
          }
          return Parser.parse(Lexer.lex(src, opt), opt);
        } catch (e) {
          e.message += '\nPlease report this to https://github.com/chjj/marked.';
          if ((opt || marked.defaults).silent) {
            return '<p>An error occured:</p><pre>' +
              escape(e.message + '', true) +
              '</pre>';
          }
          throw e;
        }
      }

      /**
       * Options
       */

      marked.options =
        marked.setOptions = function (opt) {
          merge(marked.defaults, opt);
          return marked;
        };

      marked.defaults = {
        gfm: true,
        tables: true,
        breaks: false,
        pedantic: false,
        sanitize: false,
        sanitizer: null,
        mangle: true,
        smartLists: false,
        silent: false,
        highlight: null,
        langPrefix: 'lang-',
        smartypants: false,
        headerPrefix: '',
        renderer: new Renderer,
        xhtml: false
      };

      /**
       * Expose
       */

      marked.Parser = Parser;
      marked.parser = Parser.parse;

      marked.Renderer = Renderer;

      marked.Lexer = Lexer;
      marked.lexer = Lexer.lex;

      marked.InlineLexer = InlineLexer;
      marked.inlineLexer = InlineLexer.output;

      marked.parse = marked;

      {
        module.exports = marked;
      }

    }).call(function () {
      return this || (typeof window !== 'undefined' ? window : commonjsGlobal);
    }());
  });

  var prism = createCommonjsModule(function (module) {
    /* **********************************************
         Begin prism-core.js
    ********************************************** */

    var _self = (typeof window !== 'undefined') ?
      window // if in browser
      :
      (
        (typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope) ?
        self // if in worker
        :
        {} // if in node js
      );

    /**
     * Prism: Lightweight, robust, elegant syntax highlighting
     * MIT license http://www.opensource.org/licenses/mit-license.php/
     * @author Lea Verou http://lea.verou.me
     */

    var Prism = (function () {

      // Private helper vars
      var lang = /\blang(?:uage)?-(\w+)\b/i;
      var uniqueId = 0;

      var _ = _self.Prism = {
        util: {
          encode: function (tokens) {
            if (tokens instanceof Token) {
              return new Token(tokens.type, _.util.encode(tokens.content), tokens.alias);
            } else if (_.util.type(tokens) === 'Array') {
              return tokens.map(_.util.encode);
            } else {
              return tokens.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/\u00a0/g, ' ');
            }
          },

          type: function (o) {
            return Object.prototype.toString.call(o).match(/\[object (\w+)\]/)[1];
          },

          objId: function (obj) {
            if (!obj['__id']) {
              Object.defineProperty(obj, '__id', {
                value: ++uniqueId
              });
            }
            return obj['__id'];
          },

          // Deep clone a language definition (e.g. to extend it)
          clone: function (o) {
            var type = _.util.type(o);

            switch (type) {
              case 'Object':
                var clone = {};

                for (var key in o) {
                  if (o.hasOwnProperty(key)) {
                    clone[key] = _.util.clone(o[key]);
                  }
                }

                return clone;

              case 'Array':
                // Check for existence for IE8
                return o.map && o.map(function (v) {
                  return _.util.clone(v);
                });
            }

            return o;
          }
        },

        languages: {
          extend: function (id, redef) {
            var lang = _.util.clone(_.languages[id]);

            for (var key in redef) {
              lang[key] = redef[key];
            }

            return lang;
          },

          /**
           * Insert a token before another token in a language literal
           * As this needs to recreate the object (we cannot actually insert before keys in object literals),
           * we cannot just provide an object, we need anobject and a key.
           * @param inside The key (or language id) of the parent
           * @param before The key to insert before. If not provided, the function appends instead.
           * @param insert Object with the key/value pairs to insert
           * @param root The object that contains `inside`. If equal to Prism.languages, it can be omitted.
           */
          insertBefore: function (inside, before, insert, root) {
            root = root || _.languages;
            var grammar = root[inside];

            if (arguments.length == 2) {
              insert = arguments[1];

              for (var newToken in insert) {
                if (insert.hasOwnProperty(newToken)) {
                  grammar[newToken] = insert[newToken];
                }
              }

              return grammar;
            }

            var ret = {};

            for (var token in grammar) {

              if (grammar.hasOwnProperty(token)) {

                if (token == before) {

                  for (var newToken in insert) {

                    if (insert.hasOwnProperty(newToken)) {
                      ret[newToken] = insert[newToken];
                    }
                  }
                }

                ret[token] = grammar[token];
              }
            }

            // Update references in other language definitions
            _.languages.DFS(_.languages, function (key, value) {
              if (value === root[inside] && key != inside) {
                this[key] = ret;
              }
            });

            return root[inside] = ret;
          },

          // Traverse a language definition with Depth First Search
          DFS: function (o, callback, type, visited) {
            visited = visited || {};
            for (var i in o) {
              if (o.hasOwnProperty(i)) {
                callback.call(o, i, o[i], type || i);

                if (_.util.type(o[i]) === 'Object' && !visited[_.util.objId(o[i])]) {
                  visited[_.util.objId(o[i])] = true;
                  _.languages.DFS(o[i], callback, null, visited);
                } else if (_.util.type(o[i]) === 'Array' && !visited[_.util.objId(o[i])]) {
                  visited[_.util.objId(o[i])] = true;
                  _.languages.DFS(o[i], callback, i, visited);
                }
              }
            }
          }
        },
        plugins: {},

        highlightAll: function (async, callback) {
          var env = {
            callback: callback,
            selector: 'code[class*="language-"], [class*="language-"] code, code[class*="lang-"], [class*="lang-"] code'
          };

          _.hooks.run("before-highlightall", env);

          var elements = env.elements || document.querySelectorAll(env.selector);

          for (var i = 0, element; element = elements[i++];) {
            _.highlightElement(element, async === true, env.callback);
          }
        },

        highlightElement: function (element, async, callback) {
          // Find language
          var language, grammar, parent = element;

          while (parent && !lang.test(parent.className)) {
            parent = parent.parentNode;
          }

          if (parent) {
            language = (parent.className.match(lang) || [, ''])[1].toLowerCase();
            grammar = _.languages[language];
          }

          // Set language on the element, if not present
          element.className = element.className.replace(lang, '').replace(/\s+/g, ' ') + ' language-' + language;

          // Set language on the parent, for styling
          parent = element.parentNode;

          if (/pre/i.test(parent.nodeName)) {
            parent.className = parent.className.replace(lang, '').replace(/\s+/g, ' ') + ' language-' + language;
          }

          var code = element.textContent;

          var env = {
            element: element,
            language: language,
            grammar: grammar,
            code: code
          };

          _.hooks.run('before-sanity-check', env);

          if (!env.code || !env.grammar) {
            if (env.code) {
              env.element.textContent = env.code;
            }
            _.hooks.run('complete', env);
            return;
          }

          _.hooks.run('before-highlight', env);

          if (async && _self.Worker) {
            var worker = new Worker(_.filename);

            worker.onmessage = function (evt) {
              env.highlightedCode = evt.data;

              _.hooks.run('before-insert', env);

              env.element.innerHTML = env.highlightedCode;

              callback && callback.call(env.element);
              _.hooks.run('after-highlight', env);
              _.hooks.run('complete', env);
            };

            worker.postMessage(JSON.stringify({
              language: env.language,
              code: env.code,
              immediateClose: true
            }));
          } else {
            env.highlightedCode = _.highlight(env.code, env.grammar, env.language);

            _.hooks.run('before-insert', env);

            env.element.innerHTML = env.highlightedCode;

            callback && callback.call(element);

            _.hooks.run('after-highlight', env);
            _.hooks.run('complete', env);
          }
        },

        highlight: function (text, grammar, language) {
          var tokens = _.tokenize(text, grammar);
          return Token.stringify(_.util.encode(tokens), language);
        },

        tokenize: function (text, grammar, language) {
          var Token = _.Token;

          var strarr = [text];

          var rest = grammar.rest;

          if (rest) {
            for (var token in rest) {
              grammar[token] = rest[token];
            }

            delete grammar.rest;
          }

          tokenloop: for (var token in grammar) {
            if (!grammar.hasOwnProperty(token) || !grammar[token]) {
              continue;
            }

            var patterns = grammar[token];
            patterns = (_.util.type(patterns) === "Array") ? patterns : [patterns];

            for (var j = 0; j < patterns.length; ++j) {
              var pattern = patterns[j],
                inside = pattern.inside,
                lookbehind = !!pattern.lookbehind,
                greedy = !!pattern.greedy,
                lookbehindLength = 0,
                alias = pattern.alias;

              if (greedy && !pattern.pattern.global) {
                // Without the global flag, lastIndex won't work
                var flags = pattern.pattern.toString().match(/[imuy]*$/)[0];
                pattern.pattern = RegExp(pattern.pattern.source, flags + "g");
              }

              pattern = pattern.pattern || pattern;

              // Don’t cache length as it changes during the loop
              for (var i = 0, pos = 0; i < strarr.length; pos += strarr[i].length, ++i) {

                var str = strarr[i];

                if (strarr.length > text.length) {
                  // Something went terribly wrong, ABORT, ABORT!
                  break tokenloop;
                }

                if (str instanceof Token) {
                  continue;
                }

                pattern.lastIndex = 0;

                var match = pattern.exec(str),
                  delNum = 1;

                // Greedy patterns can override/remove up to two previously matched tokens
                if (!match && greedy && i != strarr.length - 1) {
                  pattern.lastIndex = pos;
                  match = pattern.exec(text);
                  if (!match) {
                    break;
                  }

                  var from = match.index + (lookbehind ? match[1].length : 0),
                    to = match.index + match[0].length,
                    k = i,
                    p = pos;

                  for (var len = strarr.length; k < len && p < to; ++k) {
                    p += strarr[k].length;
                    // Move the index i to the element in strarr that is closest to from
                    if (from >= p) {
                      ++i;
                      pos = p;
                    }
                  }

                  /*
                   * If strarr[i] is a Token, then the match starts inside another Token, which is invalid
                   * If strarr[k - 1] is greedy we are in conflict with another greedy pattern
                   */
                  if (strarr[i] instanceof Token || strarr[k - 1].greedy) {
                    continue;
                  }

                  // Number of tokens to delete and replace with the new match
                  delNum = k - i;
                  str = text.slice(pos, p);
                  match.index -= pos;
                }

                if (!match) {
                  continue;
                }

                if (lookbehind) {
                  lookbehindLength = match[1].length;
                }

                var from = match.index + lookbehindLength,
                  match = match[0].slice(lookbehindLength),
                  to = from + match.length,
                  before = str.slice(0, from),
                  after = str.slice(to);

                var args = [i, delNum];

                if (before) {
                  args.push(before);
                }

                var wrapped = new Token(token, inside ? _.tokenize(match, inside) : match, alias, match, greedy);

                args.push(wrapped);

                if (after) {
                  args.push(after);
                }

                Array.prototype.splice.apply(strarr, args);
              }
            }
          }

          return strarr;
        },

        hooks: {
          all: {},

          add: function (name, callback) {
            var hooks = _.hooks.all;

            hooks[name] = hooks[name] || [];

            hooks[name].push(callback);
          },

          run: function (name, env) {
            var callbacks = _.hooks.all[name];

            if (!callbacks || !callbacks.length) {
              return;
            }

            for (var i = 0, callback; callback = callbacks[i++];) {
              callback(env);
            }
          }
        }
      };

      var Token = _.Token = function (type, content, alias, matchedStr, greedy) {
        this.type = type;
        this.content = content;
        this.alias = alias;
        // Copy of the full string this token was created from
        this.length = (matchedStr || "").length | 0;
        this.greedy = !!greedy;
      };

      Token.stringify = function (o, language, parent) {
        if (typeof o == 'string') {
          return o;
        }

        if (_.util.type(o) === 'Array') {
          return o.map(function (element) {
            return Token.stringify(element, language, o);
          }).join('');
        }

        var env = {
          type: o.type,
          content: Token.stringify(o.content, language, parent),
          tag: 'span',
          classes: ['token', o.type],
          attributes: {},
          language: language,
          parent: parent
        };

        if (env.type == 'comment') {
          env.attributes['spellcheck'] = 'true';
        }

        if (o.alias) {
          var aliases = _.util.type(o.alias) === 'Array' ? o.alias : [o.alias];
          Array.prototype.push.apply(env.classes, aliases);
        }

        _.hooks.run('wrap', env);

        var attributes = Object.keys(env.attributes).map(function (name) {
          return name + '="' + (env.attributes[name] || '').replace(/"/g, '&quot;') + '"';
        }).join(' ');

        return '<' + env.tag + ' class="' + env.classes.join(' ') + '"' + (attributes ? ' ' + attributes : '') + '>' + env.content + '</' + env.tag + '>';

      };

      if (!_self.document) {
        if (!_self.addEventListener) {
          // in Node.js
          return _self.Prism;
        }
        // In worker
        _self.addEventListener('message', function (evt) {
          var message = JSON.parse(evt.data),
            lang = message.language,
            code = message.code,
            immediateClose = message.immediateClose;

          _self.postMessage(_.highlight(code, _.languages[lang], lang));
          if (immediateClose) {
            _self.close();
          }
        }, false);

        return _self.Prism;
      }

      //Get current script and highlight
      var script = document.currentScript || [].slice.call(document.getElementsByTagName("script")).pop();

      if (script) {
        _.filename = script.src;

        if (document.addEventListener && !script.hasAttribute('data-manual')) {
          if (document.readyState !== "loading") {
            if (window.requestAnimationFrame) {
              window.requestAnimationFrame(_.highlightAll);
            } else {
              window.setTimeout(_.highlightAll, 16);
            }
          } else {
            document.addEventListener('DOMContentLoaded', _.highlightAll);
          }
        }
      }

      return _self.Prism;

    })();

    if ('object' !== 'undefined' && module.exports) {
      module.exports = Prism;
    }

    // hack for components to work correctly in node.js
    if (typeof commonjsGlobal !== 'undefined') {
      commonjsGlobal.Prism = Prism;
    }


    /* **********************************************
         Begin prism-markup.js
    ********************************************** */

    Prism.languages.markup = {
      'comment': /<!--[\w\W]*?-->/,
      'prolog': /<\?[\w\W]+?\?>/,
      'doctype': /<!DOCTYPE[\w\W]+?>/i,
      'cdata': /<!\[CDATA\[[\w\W]*?]]>/i,
      'tag': {
        pattern: /<\/?(?!\d)[^\s>\/=$<]+(?:\s+[^\s>\/=]+(?:=(?:("|')(?:\\\1|\\?(?!\1)[\w\W])*\1|[^\s'">=]+))?)*\s*\/?>/i,
        inside: {
          'tag': {
            pattern: /^<\/?[^\s>\/]+/i,
            inside: {
              'punctuation': /^<\/?/,
              'namespace': /^[^\s>\/:]+:/
            }
          },
          'attr-value': {
            pattern: /=(?:('|")[\w\W]*?(\1)|[^\s>]+)/i,
            inside: {
              'punctuation': /[=>"']/
            }
          },
          'punctuation': /\/?>/,
          'attr-name': {
            pattern: /[^\s>\/]+/,
            inside: {
              'namespace': /^[^\s>\/:]+:/
            }
          }

        }
      },
      'entity': /&#?[\da-z]{1,8};/i
    };

    // Plugin to make entity title show the real entity, idea by Roman Komarov
    Prism.hooks.add('wrap', function (env) {

      if (env.type === 'entity') {
        env.attributes['title'] = env.content.replace(/&amp;/, '&');
      }
    });

    Prism.languages.xml = Prism.languages.markup;
    Prism.languages.html = Prism.languages.markup;
    Prism.languages.mathml = Prism.languages.markup;
    Prism.languages.svg = Prism.languages.markup;


    /* **********************************************
         Begin prism-css.js
    ********************************************** */

    Prism.languages.css = {
      'comment': /\/\*[\w\W]*?\*\//,
      'atrule': {
        pattern: /@[\w-]+?.*?(;|(?=\s*\{))/i,
        inside: {
          'rule': /@[\w-]+/
          // See rest below
        }
      },
      'url': /url\((?:(["'])(\\(?:\r\n|[\w\W])|(?!\1)[^\\\r\n])*\1|.*?)\)/i,
      'selector': /[^\{\}\s][^\{\};]*?(?=\s*\{)/,
      'string': {
        pattern: /("|')(\\(?:\r\n|[\w\W])|(?!\1)[^\\\r\n])*\1/,
        greedy: true
      },
      'property': /(\b|\B)[\w-]+(?=\s*:)/i,
      'important': /\B!important\b/i,
      'function': /[-a-z0-9]+(?=\()/i,
      'punctuation': /[(){};:]/
    };

    Prism.languages.css['atrule'].inside.rest = Prism.util.clone(Prism.languages.css);

    if (Prism.languages.markup) {
      Prism.languages.insertBefore('markup', 'tag', {
        'style': {
          pattern: /(<style[\w\W]*?>)[\w\W]*?(?=<\/style>)/i,
          lookbehind: true,
          inside: Prism.languages.css,
          alias: 'language-css'
        }
      });

      Prism.languages.insertBefore('inside', 'attr-value', {
        'style-attr': {
          pattern: /\s*style=("|').*?\1/i,
          inside: {
            'attr-name': {
              pattern: /^\s*style/i,
              inside: Prism.languages.markup.tag.inside
            },
            'punctuation': /^\s*=\s*['"]|['"]\s*$/,
            'attr-value': {
              pattern: /.+/i,
              inside: Prism.languages.css
            }
          },
          alias: 'language-css'
        }
      }, Prism.languages.markup.tag);
    }

    /* **********************************************
         Begin prism-clike.js
    ********************************************** */

    Prism.languages.clike = {
      'comment': [{
          pattern: /(^|[^\\])\/\*[\w\W]*?\*\//,
          lookbehind: true
        },
        {
          pattern: /(^|[^\\:])\/\/.*/,
          lookbehind: true
        }
      ],
      'string': {
        pattern: /(["'])(\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
        greedy: true
      },
      'class-name': {
        pattern: /((?:\b(?:class|interface|extends|implements|trait|instanceof|new)\s+)|(?:catch\s+\())[a-z0-9_\.\\]+/i,
        lookbehind: true,
        inside: {
          punctuation: /(\.|\\)/
        }
      },
      'keyword': /\b(if|else|while|do|for|return|in|instanceof|function|new|try|throw|catch|finally|null|break|continue)\b/,
      'boolean': /\b(true|false)\b/,
      'function': /[a-z0-9_]+(?=\()/i,
      'number': /\b-?(?:0x[\da-f]+|\d*\.?\d+(?:e[+-]?\d+)?)\b/i,
      'operator': /--?|\+\+?|!=?=?|<=?|>=?|==?=?|&&?|\|\|?|\?|\*|\/|~|\^|%/,
      'punctuation': /[{}[\];(),.:]/
    };


    /* **********************************************
         Begin prism-javascript.js
    ********************************************** */

    Prism.languages.javascript = Prism.languages.extend('clike', {
      'keyword': /\b(as|async|await|break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally|for|from|function|get|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|set|static|super|switch|this|throw|try|typeof|var|void|while|with|yield)\b/,
      'number': /\b-?(0x[\dA-Fa-f]+|0b[01]+|0o[0-7]+|\d*\.?\d+([Ee][+-]?\d+)?|NaN|Infinity)\b/,
      // Allow for all non-ASCII characters (See http://stackoverflow.com/a/2008444)
      'function': /[_$a-zA-Z\xA0-\uFFFF][_$a-zA-Z0-9\xA0-\uFFFF]*(?=\()/i,
      'operator': /--?|\+\+?|!=?=?|<=?|>=?|==?=?|&&?|\|\|?|\?|\*\*?|\/|~|\^|%|\.{3}/
    });

    Prism.languages.insertBefore('javascript', 'keyword', {
      'regex': {
        pattern: /(^|[^/])\/(?!\/)(\[.+?]|\\.|[^/\\\r\n])+\/[gimyu]{0,5}(?=\s*($|[\r\n,.;})]))/,
        lookbehind: true,
        greedy: true
      }
    });

    Prism.languages.insertBefore('javascript', 'string', {
      'template-string': {
        pattern: /`(?:\\\\|\\?[^\\])*?`/,
        greedy: true,
        inside: {
          'interpolation': {
            pattern: /\$\{[^}]+\}/,
            inside: {
              'interpolation-punctuation': {
                pattern: /^\$\{|\}$/,
                alias: 'punctuation'
              },
              rest: Prism.languages.javascript
            }
          },
          'string': /[\s\S]+/
        }
      }
    });

    if (Prism.languages.markup) {
      Prism.languages.insertBefore('markup', 'tag', {
        'script': {
          pattern: /(<script[\w\W]*?>)[\w\W]*?(?=<\/script>)/i,
          lookbehind: true,
          inside: Prism.languages.javascript,
          alias: 'language-javascript'
        }
      });
    }

    Prism.languages.js = Prism.languages.javascript;

    /* **********************************************
         Begin prism-file-highlight.js
    ********************************************** */

    (function () {
      if (typeof self === 'undefined' || !self.Prism || !self.document || !document.querySelector) {
        return;
      }

      self.Prism.fileHighlight = function () {

        var Extensions = {
          'js': 'javascript',
          'py': 'python',
          'rb': 'ruby',
          'ps1': 'powershell',
          'psm1': 'powershell',
          'sh': 'bash',
          'bat': 'batch',
          'h': 'c',
          'tex': 'latex'
        };

        if (Array.prototype.forEach) { // Check to prevent error in IE8
          Array.prototype.slice.call(document.querySelectorAll('pre[data-src]')).forEach(function (pre) {
            var src = pre.getAttribute('data-src');

            var language, parent = pre;
            var lang = /\blang(?:uage)?-(?!\*)(\w+)\b/i;
            while (parent && !lang.test(parent.className)) {
              parent = parent.parentNode;
            }

            if (parent) {
              language = (pre.className.match(lang) || [, ''])[1];
            }

            if (!language) {
              var extension = (src.match(/\.(\w+)$/) || [, ''])[1];
              language = Extensions[extension] || extension;
            }

            var code = document.createElement('code');
            code.className = 'language-' + language;

            pre.textContent = '';

            code.textContent = 'Loading…';

            pre.appendChild(code);

            var xhr = new XMLHttpRequest();

            xhr.open('GET', src, true);

            xhr.onreadystatechange = function () {
              if (xhr.readyState == 4) {

                if (xhr.status < 400 && xhr.responseText) {
                  code.textContent = xhr.responseText;

                  Prism.highlightElement(code);
                } else if (xhr.status >= 400) {
                  code.textContent = '✖ Error ' + xhr.status + ' while fetching file: ' + xhr.statusText;
                } else {
                  code.textContent = '✖ Error: File does not exist or is empty';
                }
              }
            };

            xhr.send(null);
          });
        }

      };

      document.addEventListener('DOMContentLoaded', self.Prism.fileHighlight);

    })();
  });

  /**
   * gen toc tree
   * @link https://github.com/killercup/grock/blob/5280ae63e16c5739e9233d9009bc235ed7d79a50/styles/solarized/assets/js/behavior.coffee#L54-L81
   * @param  {Array} toc
   * @param  {Number} maxLevel
   * @return {Array}
   */
  function genTree(toc, maxLevel) {
    var headlines = [];
    var last = {};

    toc.forEach(function (headline) {
      var level = headline.level || 1;
      var len = level - 1;

      if (level > maxLevel) {
        return
      }
      if (last[len]) {
        last[len].children = (last[len].children || []).concat(headline);
      } else {
        headlines.push(headline);
      }
      last[level] = headline;
    });

    return headlines
  }

  var cache$1 = {};
  var re = /[\u2000-\u206F\u2E00-\u2E7F\\'!"#$%&()*+,.\/:;<=>?@\[\]^`{|}~]/g;

  function lower(string) {
    return string.toLowerCase()
  }

  function slugify(str) {
    if (typeof str !== 'string') {
      return ''
    }

    var slug = str
      .trim()
      .replace(/[A-Z]+/g, lower)
      .replace(/<[^>\d]+>/g, '')
      .replace(re, '')
      .replace(/\s/g, '-')
      .replace(/-+/g, '-')
      .replace(/^(\d)/, '_$1');
    var count = cache$1[slug];

    count = cache$1.hasOwnProperty(slug) ? count + 1 : 0;
    cache$1[slug] = count;

    if (count) {
      slug = slug + '-' + count;
    }

    return slug
  }

  slugify.clear = function () {
    cache$1 = {};
  };

  function replace(m, $1) {
    return '<img class="emoji" src="https://assets-cdn.github.com/images/icons/emoji/' + $1 + '.png" alt="' + $1 + '" />'
  }

  function emojify(text) {
    return text
      .replace(/<(pre|template|code)[^>]*?>[\s\S]+?<\/(pre|template|code)>/g, function (m) {
        return m.replace(/:/g, '__colon__');
      })
      .replace(/:(\w+?):/ig, (inBrowser && window.emojify) || replace)
      .replace(/__colon__/g, ':')
  }

  var decode = decodeURIComponent;
  var encode = encodeURIComponent;

  function parseQuery(query) {
    var res = {};

    query = query.trim().replace(/^(\?|#|&)/, '');

    if (!query) {
      return res
    }

    // Simple parse
    query.split('&').forEach(function (param) {
      var parts = param.replace(/\+/g, ' ').split('=');

      res[parts[0]] = parts[1] && decode(parts[1]);
    });

    return res
  }

  function stringifyQuery(obj) {
    var qs = [];

    for (var key in obj) {
      qs.push(
        obj[key] ?
        ((encode(key)) + "=" + (encode(obj[key]))).toLowerCase() :
        encode(key)
      );
    }

    return qs.length ? ("?" + (qs.join('&'))) : ''
  }

  function getPath() {
    var args = [],
      len = arguments.length;
    while (len--) args[len] = arguments[len];

    return cleanPath(args.join('/'))
  }

  var isAbsolutePath = cached(function (path) {
    return /(:|(\/{2}))/g.test(path)
  });

  var getParentPath = cached(function (path) {
    return /\/$/g.test(path) ?
      path :
      (path = path.match(/(\S*\/)[^\/]+$/)) ? path[1] : ''
  });

  var cleanPath = cached(function (path) {
    return path.replace(/^\/+/, '/').replace(/([^:])\/{2,}/g, '$1/')
  });

  var cachedLinks = {};

  var Compiler = function Compiler(config, router) {
    this.config = config;
    this.router = router;
    this.cacheTree = {};
    this.toc = [];
    this.linkTarget = config.externalLinkTarget || '_blank';
    this.contentBase = router.getBasePath();

    var renderer = this._initRenderer();
    var compile;
    var mdConf = config.markdown || {};

    if (isFn(mdConf)) {
      compile = mdConf(marked, renderer);
    } else {
      marked.setOptions(merge(mdConf, {
        renderer: merge(renderer, mdConf.renderer)
      }));
      compile = marked;
    }

    this.compile = cached(function (text) {
      var html = '';

      if (!text) {
        return text
      }

      html = compile(text);
      html = config.noEmoji ? html : emojify(html);
      slugify.clear();

      return html
    });
  };

  Compiler.prototype.matchNotCompileLink = function matchNotCompileLink(link) {
    var links = this.config.noCompileLinks;

    for (var i = 0; i < links.length; i++) {
      var n = links[i];
      var re = cachedLinks[n] || (cachedLinks[n] = new RegExp(("^" + n + "$")));

      if (re.test(link)) {
        return link
      }
    }
  };

  Compiler.prototype._initRenderer = function _initRenderer() {
    var renderer = new marked.Renderer();
    var ref = this;
    var linkTarget = ref.linkTarget;
    var router = ref.router;
    var contentBase = ref.contentBase;
    var _self = this;
    var origin = {};

    /**
     * render anchor tag
     * @link https://github.com/chjj/marked#overriding-renderer-methods
     */
    origin.heading = renderer.heading = function (text, level) {
      var nextToc = {
        level: level,
        title: text
      };

      if (/{docsify-ignore}/g.test(text)) {
        text = text.replace('{docsify-ignore}', '');
        nextToc.title = text;
        nextToc.ignoreSubHeading = true;
      }

      if (/{docsify-ignore-all}/g.test(text)) {
        text = text.replace('{docsify-ignore-all}', '');
        nextToc.title = text;
        nextToc.ignoreAllSubs = true;
      }

      var slug = slugify(text);
      var url = router.toURL(router.getCurrentPath(), {
        id: slug
      });
      nextToc.slug = url;
      _self.toc.push(nextToc);

      return ("<h" + level + " id=\"" + slug + "\"><a href=\"" + url + "\" data-id=\"" + slug + "\" class=\"anchor\"><span>" + text + "</span></a></h" + level + ">")
    };
    // highlight code
    origin.code = renderer.code = function (code, lang) {
      if (lang === void 0) lang = '';

      var hl = prism.highlight(code, prism.languages[lang] || prism.languages.markup);

      return ("<pre v-pre data-lang=\"" + lang + "\"><code class=\"lang-" + lang + "\">" + hl + "</code></pre>")
    };
    origin.link = renderer.link = function (href, title, text) {
      var blank = '';
      // console.log('orlink',curPath);
      console.log('orlink', href, curPath);
      if (!/:|(\/{2})/.test(href) &&
        !_self.matchNotCompileLink(href) &&
        !/(\s?:ignore)(\s\S+)?$/.test(title)) {
        href = router.toURL(href, null, router.getCurrentPath());
      } else {
        blank = " target=\"" + linkTarget + "\"";
        title = title && title.replace(/:ignore/g, '').trim();
      }

      var target = title && title.match(/:target=\w+/);
      if (target) {
        target = target[0];
        title = title.replace(target, '');
        blank = ' ' + target.slice(1);
      }

      if (title) {
        title = " title=\"" + title + "\"";
      }
      // 增加.和..
      if (href.indexOf('.') >= 0 && window) {
        if (href.indexOf('..') < 0) {
          href = href.replace(/\/([s|n])\.\//g, function (find, $1) {
            return curPath[$1];
          })
        } else {
          href = href.replace(/\/([s|n])\.\.\//g, function (find, $1) {
            var level = curPath[$1].split('/').length;
            return curPath[$1].split('/').splice(0,level-2).join('/');
          })
        }
      }

      return ("<a href=\"" + href + "\"" + (title || '') + blank + ">" + text + "</a>")
    };
    origin.paragraph = renderer.paragraph = function (text) {
      if (/^!&gt;/.test(text)) {
        return helper('tip', text)
      } else if (/^\?&gt;/.test(text)) {
        return helper('warn', text)
      }
      return ("<p>" + text + "</p>")
    };
    origin.image = renderer.image = function (href, title, text) {
      var url = href;
      var titleHTML = title ? (" title=\"" + title + "\"") : '';

      if (!isAbsolutePath(href)) {
        url = getPath(contentBase, href);
      }

      return ("<img src=\"" + url + "\" data-origin=\"" + href + "\" alt=\"" + text + "\"" + titleHTML + ">")
    };

    renderer.origin = origin;

    return renderer
  };

  /**
   * Compile sidebar
   */
  Compiler.prototype.sidebar = function sidebar(text, level) {
    var currentPath = this.router.getCurrentPath();
    var html = '';

    if (text) {
      html = this.compile(text);
      html = html && html.match(/<ul[^>]*>([\s\S]+)<\/ul>/g)[0];
    } else {
      var tree$$1 = this.cacheTree[currentPath] || genTree(this.toc, level);
      html = tree(tree$$1, '<ul>');
      this.cacheTree[currentPath] = tree$$1;
    }

    return html
  };

  /**
   * Compile sub sidebar
   */
  Compiler.prototype.subSidebar = function subSidebar(level) {
    console.log('sub:level', level)
    if (!level) {
      this.toc = [];
      return
    }
    var currentPath = this.router.getCurrentPath();
    var ref = this;
    var cacheTree = ref.cacheTree;
    var toc = ref.toc;

    toc[0] && toc[0].ignoreAllSubs && (this.toc = []);
    toc[0] && toc[0].level === 1 && toc.shift();
    toc.forEach(function (node, i) {
      node.ignoreSubHeading && toc.splice(i, 1);
    });

    var tree$$1 = cacheTree[currentPath] || genTree(toc, level);

    cacheTree[currentPath] = tree$$1;
    this.toc = [];
    return tree(tree$$1, '<ul class="app-sub-sidebar">')
  };

  Compiler.prototype.article = function article(text) {
    return this.compile(text)
  };

  /**
   * Compile cover page
   */
  Compiler.prototype.cover = function cover$$1(text) {
    var cacheToc = this.toc.slice();
    var html = this.compile(text);

    this.toc = cacheToc.slice();

    return html
  };

  var title = $.title;
  /**
   * Toggle button
   */
  function btn(el, router) {
    var toggle = function (_) {
      return body.classList.toggle('close');
    };

    el = getNode(el);
    on(el, 'click', function (e) {
      e.stopPropagation();
      toggle();
    });

    var sidebar = getNode('.sidebar');

    isMobile &&
      on(
        body,
        'click',
        function (_) {
          return body.classList.contains('close') && toggle();
        }
      );
    on(sidebar, 'click', function (_) {
      return setTimeout((function (_) {
        return getAndActive(router, sidebar, true, true);
      }, 0));
    });
  }

  function sticky() {
    var cover = getNode('section.cover');
    if (!cover) {
      return
    }
    var coverHeight = cover.getBoundingClientRect().height;

    if (window.pageYOffset >= coverHeight || cover.classList.contains('hidden')) {
      toggleClass(body, 'add', 'sticky');
    } else {
      toggleClass(body, 'remove', 'sticky');
    }
  }

  /**
   * Get and active link
   * @param  {object} router
   * @param  {string|element}  el
   * @param  {Boolean} isParent   acitve parent
   * @param  {Boolean} autoTitle  auto set title
   * @return {element}
   */
  function getAndActive(router, el, isParent, autoTitle) {
    el = getNode(el);

    var links = findAll(el, 'a');
    var hash = router.toURL(router.getCurrentPath());
    var target;

    links.sort(function (a, b) {
      return b.href.length - a.href.length;
    }).forEach(function (a) {
      var href = a.getAttribute('href');
      var node = isParent ? a.parentNode : a;

      if (hash.indexOf(href) === 0 && !target) {
        target = a;
        toggleClass(node, 'add', 'active');
      } else {
        toggleClass(node, 'remove', 'active');
      }
    });

    if (autoTitle) {
      $.title = target ? ((target.innerText) + " - " + title) : title;
    }

    return target
  }

  var _createClass = function () {
    function defineProperties(target, props) {
      for (var i = 0; i < props.length; i++) {
        var descriptor = props[i];
        descriptor.enumerable = descriptor.enumerable || false;
        descriptor.configurable = true;
        if ("value" in descriptor) {
          descriptor.writable = true;
        }
        Object.defineProperty(target, descriptor.key, descriptor);
      }
    }
    return function (Constructor, protoProps, staticProps) {
      if (protoProps) {
        defineProperties(Constructor.prototype, protoProps);
      }
      if (staticProps) {
        defineProperties(Constructor, staticProps);
      }
      return Constructor;
    };
  }();

  function _classCallCheck(instance, Constructor) {
    if (!(instance instanceof Constructor)) {
      throw new TypeError("Cannot call a class as a function");
    }
  }

  var Tweezer = function () {
    function Tweezer() {
      var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

      _classCallCheck(this, Tweezer);

      this.duration = opts.duration || 1000;
      this.ease = opts.easing || this._defaultEase;
      this.start = opts.start;
      this.end = opts.end;

      this.frame = null;
      this.next = null;
      this.isRunning = false;
      this.events = {};
      this.direction = this.start < this.end ? 'up' : 'down';
    }

    _createClass(Tweezer, [{
      key: 'begin',
      value: function begin() {
        if (!this.isRunning && this.next !== this.end) {
          this.frame = window.requestAnimationFrame(this._tick.bind(this));
        }
        return this;
      }
    }, {
      key: 'stop',
      value: function stop() {
        window.cancelAnimationFrame(this.frame);
        this.isRunning = false;
        this.frame = null;
        this.timeStart = null;
        this.next = null;
        return this;
      }
    }, {
      key: 'on',
      value: function on(name, handler) {
        this.events[name] = this.events[name] || [];
        this.events[name].push(handler);
        return this;
      }
    }, {
      key: 'emit',
      value: function emit(name, val) {
        var _this = this;

        var e = this.events[name];
        e && e.forEach(function (handler) {
          return handler.call(_this, val);
        });
      }
    }, {
      key: '_tick',
      value: function _tick(currentTime) {
        this.isRunning = true;

        var lastTick = this.next || this.start;

        if (!this.timeStart) {
          this.timeStart = currentTime;
        }
        this.timeElapsed = currentTime - this.timeStart;
        this.next = Math.round(this.ease(this.timeElapsed, this.start, this.end - this.start, this.duration));

        if (this._shouldTick(lastTick)) {
          this.emit('tick', this.next);
          this.frame = window.requestAnimationFrame(this._tick.bind(this));
        } else {
          this.emit('tick', this.end);
          this.emit('done', null);
        }
      }
    }, {
      key: '_shouldTick',
      value: function _shouldTick(lastTick) {
        return {
          up: this.next < this.end && lastTick <= this.next,
          down: this.next > this.end && lastTick >= this.next
        }[this.direction];
      }
    }, {
      key: '_defaultEase',
      value: function _defaultEase(t, b, c, d) {
        if ((t /= d / 2) < 1) {
          return c / 2 * t * t + b;
        }
        return -c / 2 * (--t * (t - 2) - 1) + b;
      }
    }]);

    return Tweezer;
  }();

  var nav = {};
  var hoverOver = false;
  var scroller = null;
  var enableScrollEvent = true;
  var coverHeight = 0;

  function scrollTo(el) {
    if (scroller) {
      scroller.stop();
    }
    enableScrollEvent = false;
    scroller = new Tweezer({
        start: window.pageYOffset,
        end: el.getBoundingClientRect().top + window.pageYOffset,
        duration: 500
      })
      .on('tick', function (v) {
        return window.scrollTo(0, v);
      })
      .on('done', function () {
        enableScrollEvent = true;
        scroller = null;
      })
      .begin();
  }

  function highlight() {
    if (!enableScrollEvent) {
      return
    }
    var sidebar = getNode('.sidebar');
    var anchors = findAll('.anchor');
    var wrap = find(sidebar, '.sidebar-nav');
    var active = find(sidebar, 'li.active');
    var doc = document.documentElement;
    var top = ((doc && doc.scrollTop) || document.body.scrollTop) - coverHeight;
    var last;

    for (var i = 0, len = anchors.length; i < len; i += 1) {
      var node = anchors[i];

      if (node.offsetTop > top) {
        if (!last) {
          last = node;
        }
        break
      } else {
        last = node;
      }
    }
    // console.log(last);
    if (!last) {
      return
    }
    var tmp = getNavKey(location.hash.slice(1).replace(/\?.*/g, ''), last.getAttribute('data-id'));
    var li = nav[tmp];
    // console.log(tmp, 'nav', nav, 'li:', li, 'ac:', active, 'las', last);

    if (!li || li === active) {
      return
    }

    active && active.classList.remove('active');
    li.classList.add('active');
    active = li;

    // scroll into view
    // https://github.com/vuejs/vuejs.org/blob/master/themes/vue/source/js/common.js#L282-L297
    if (!hoverOver && body.classList.contains('sticky')) {
      var height = sidebar.clientHeight;
      var curOffset = 0;
      var cur = active.offsetTop + active.clientHeight + 40;
      var isInView =
        active.offsetTop >= wrap.scrollTop && cur <= wrap.scrollTop + height;
      var notThan = cur - curOffset < height;
      var top$1 = isInView ? wrap.scrollTop : notThan ? curOffset : cur - height;

      sidebar.scrollTop = top$1;
    }
  }

  function getNavKey(path, id) {
    return (path + "?id=" + id)
  }

  function scrollActiveSidebar(router) {

    // console.log('scroll')

    var cover = find('.cover.show');
    coverHeight = cover ? cover.offsetHeight : 0;

    var sidebar = getNode('.sidebar');
    var lis = findAll(sidebar, 'li');
    // console.log(lis);

    for (var i = 0, len = lis.length; i < len; i += 1) {
      var li = lis[i];
      var a = li.querySelector('a');
      if (!a) {
        continue
      }
      var href = a.getAttribute('href');

      if (href !== '/') {
        var ref = router.parse(href);
        var id = ref.query.id;
        var path = ref.path;
        if (id) {
          href = getNavKey(path, id);
        }
      }

      if (href) {
        nav[decodeURIComponent(href)] = li;
      }
    }
    // console.log(isMobile);

    if (isMobile) {
      return
    }

    console.log('off')

    off('scroll', highlight);

    console.log('on')

    on('scroll', highlight);
    on(sidebar, 'mouseover', function () {
      hoverOver = true;
    });
    on(sidebar, 'mouseleave', function () {
      hoverOver = false;
    });
  }

  function scrollIntoView(path, id) {
    if (!id) {
      return
    }

    var section = find('#' + id);
    section && scrollTo(section);

    var li = nav[getNavKey(path, id)];
    var sidebar = getNode('.sidebar');
    var active = find(sidebar, 'li.active');
    active && active.classList.remove('active');
    li && li.classList.add('active');
  }

  var scrollEl = $.scrollingElement || $.documentElement;

  function scroll2Top(offset) {
    if (offset === void 0) offset = 0;

    scrollEl.scrollTop = offset === true ? 0 : Number(offset);
  }

  function executeScript() {
    var script = findAll('.markdown-section>script')
      .filter(function (s) {
        return !/template/.test(s.type);
      })[0];
    if (!script) {
      return false
    }
    var code = script.innerText.trim();
    if (!code) {
      return false
    }

    setTimeout(function (_) {
      window.__EXECUTE_RESULT__ = new Function(code)();
    }, 0);
  }

  function formatUpdated(html, updated, fn) {
    updated = typeof fn === 'function' ?
      fn(updated) :
      typeof fn === 'string' ?
      tinydate(fn)(new Date(updated)) :
      updated;

    return html.replace(/{docsify-updated}/g, updated)
  }

  function renderMain(html) {
    if (!html) {
      // TODO: Custom 404 page
      html = 'not found';
    }

    this._renderTo('.markdown-section', html);
    // Render sidebar with the TOC
    !this.config.loadSidebar && this._renderSidebar();

    // execute script
    if (this.config.executeScript !== false &&
      typeof window.Vue !== 'undefined' &&
      !executeScript()) {
      setTimeout(function (_) {
        var vueVM = window.__EXECUTE_RESULT__;
        vueVM && vueVM.$destroy && vueVM.$destroy();
        window.__EXECUTE_RESULT__ = new window.Vue().$mount('#main');
      }, 0);
    } else {
      this.config.executeScript && executeScript();
    }
  }

  function renderNameLink(vm) {
    var el = getNode('.app-name-link');
    var nameLink = vm.config.nameLink;
    var path = vm.route.path;

    if (!el) {
      return
    }

    if (isPrimitive(vm.config.nameLink)) {
      el.setAttribute('href', nameLink);
    } else if (typeof nameLink === 'object') {
      var match = Object.keys(nameLink).filter(function (key) {
        return path.indexOf(key) > -1;
      })[0];

      el.setAttribute('href', nameLink[match]);
    }
  }

  function renderMixin(proto) {
    proto._renderTo = function (el, content, replace) {
      var node = getNode(el);
      if (node) {
        node[replace ? 'outerHTML' : 'innerHTML'] = content;
      }
    };

    proto._renderSidebar = function (text) {
      var ref = this.config;
      var maxLevel = ref.maxLevel;
      var subMaxLevel = ref.subMaxLevel;
      var loadSidebar = ref.loadSidebar;

      this._renderTo('.sidebar-nav', this.compiler.sidebar(text, maxLevel));
      var activeEl = getAndActive(this.router, '.sidebar-nav', true, true);
      if (loadSidebar && activeEl) {
        activeEl.parentNode.innerHTML += (this.compiler.subSidebar(subMaxLevel) || '');
      } else {
        // reset toc
        this.compiler.subSidebar();
      }
      // bind event
      this._bindEventOnRendered(activeEl);
    };

    proto._bindEventOnRendered = function (activeEl) {
      var ref = this.config;
      var autoHeader = ref.autoHeader;
      var auto2top = ref.auto2top;

      scrollActiveSidebar(this.router);

      if (autoHeader && activeEl) {
        var main$$1 = getNode('#main');
        var firstNode = main$$1.children[0];
        if (firstNode && firstNode.tagName !== 'H1') {
          var h1 = create('h1');
          h1.innerText = activeEl.innerText;
          before(main$$1, h1);
        }
      }

      auto2top && scroll2Top(auto2top);
    };

    proto._renderNav = function (text) {
      text && this._renderTo('nav', this.compiler.compile(text));
      getAndActive(this.router, 'nav');
    };

    proto._renderMain = function (text, opt) {
      var this$1 = this;
      if (opt === void 0) opt = {};

      if (!text) {
        return renderMain.call(this, text)
      }

      callHook(this, 'beforeEach', text, function (result) {
        var html = this$1.isHTML ? result : this$1.compiler.compile(result);
        if (opt.updatedAt) {
          html = formatUpdated(html, opt.updatedAt, this$1.config.formatUpdated);
        }

        callHook(this$1, 'afterEach', html, function (text) {
          return renderMain.call(this$1, text);
        });
      });
    };

    proto._renderCover = function (text) {
      var el = getNode('.cover');
      if (!text) {
        toggleClass(el, 'remove', 'show');
        return
      }
      toggleClass(el, 'add', 'show');

      var html = this.coverIsHTML ? text : this.compiler.cover(text);
      var m = html.trim().match('<p><img.*?data-origin="(.*?)"[^a]+alt="(.*?)">([^<]*?)</p>$');

      if (m) {
        if (m[2] === 'color') {
          el.style.background = m[1] + (m[3] || '');
        } else {
          var path = m[1];

          toggleClass(el, 'add', 'has-mask');
          if (!isAbsolutePath(m[1])) {
            path = getPath(this.router.getBasePath(), m[1]);
          }
          el.style.backgroundImage = "url(" + path + ")";
          el.style.backgroundSize = 'cover';
          el.style.backgroundPosition = 'center center';
        }
        html = html.replace(m[0], '');
      }

      this._renderTo('.cover-main', html);
      sticky();
    };

    proto._updateRender = function () {
      // render name link
      renderNameLink(this);
    };
  }

  function initRender(vm) {
    var config = vm.config;

    // Init markdown compiler
    vm.compiler = new Compiler(config, vm.router);

    var id = config.el || '#app';
    var navEl = find('nav') || create('nav');

    var el = find(id);
    var html = '';
    var navAppendToTarget = body;

    if (el) {
      if (config.repo) {
        html += corner(config.repo);
      }
      if (config.coverpage) {
        html += cover();
      }

      html += main(config);
      // Render main app
      vm._renderTo(el, html, true);
    } else {
      vm.rendered = true;
    }

    if (config.mergeNavbar && isMobile) {
      navAppendToTarget = find('.sidebar');
    } else {
      navEl.classList.add('app-nav');

      if (!config.repo) {
        navEl.classList.add('no-badge');
      }
    }

    // Add nav
    before(navAppendToTarget, navEl);

    if (config.themeColor) {
      $.head.appendChild(
        create('div', theme(config.themeColor)).firstElementChild
      );
      // Polyfll
      cssVars(config.themeColor);
    }
    vm._updateRender();
    toggleClass(body, 'ready');
  }

  var cached$1 = {};

  function getAlias(path, alias, last) {
    var match = Object.keys(alias).filter(function (key) {
      var re = cached$1[key] || (cached$1[key] = new RegExp(("^" + key + "$")));
      return re.test(path) && path !== last
    })[0];

    return match ?
      getAlias(path.replace(cached$1[match], alias[match]), alias, path) :
      path
  }

  function getFileName(path) {
    return /\.(md|html)$/g.test(path) ?
      path :
      /\/$/g.test(path) ? (path + "README.md") : (path + ".md")
  }

  var History = function History(config) {
    this.config = config;
  };

  History.prototype.getBasePath = function getBasePath() {
    return this.config.basePath
  };

  History.prototype.getFile = function getFile(path, isRelative) {
    path = path || this.getCurrentPath();

    var ref = this;
    var config = ref.config;
    var base = this.getBasePath();

    path = config.alias ? getAlias(path, config.alias) : path;
    path = getFileName(path);
    path = path === '/README.md' ? config.homepage || path : path;
    path = isAbsolutePath(path) ? path : getPath(base, path);

    if (isRelative) {
      path = path.replace(new RegExp(("^" + base)), '');
    }

    return path
  };

  History.prototype.onchange = function onchange(cb) {
    if (cb === void 0) cb = noop;

    cb();
  };

  History.prototype.getCurrentPath = function getCurrentPath() {};

  History.prototype.normalize = function normalize() {};

  History.prototype.parse = function parse() {};

  History.prototype.toURL = function toURL() {};

  function replaceHash(path) {
    var i = location.href.indexOf('#');
    location.replace(location.href.slice(0, i >= 0 ? i : 0) + '#' + path);
  }

  var replaceSlug = cached(function (path) {
    return path.replace('#', '?id=')
  });

  var HashHistory = (function (History$$1) {
    function HashHistory(config) {
      History$$1.call(this, config);
      this.mode = 'hash';
    }

    if (History$$1) HashHistory.__proto__ = History$$1;
    HashHistory.prototype = Object.create(History$$1 && History$$1.prototype);
    HashHistory.prototype.constructor = HashHistory;

    HashHistory.prototype.getBasePath = function getBasePath() {
      var path = window.location.pathname || '';
      var base = this.config.basePath;

      return /^(\/|https?:)/g.test(base) ? base : cleanPath(path + '/' + base)
    };

    HashHistory.prototype.getCurrentPath = function getCurrentPath() {
      // We can't use location.hash here because it's not
      // consistent across browsers - Firefox will pre-decode it!
      var href = location.href;
      var index = href.indexOf('#');
      return index === -1 ? '' : href.slice(index + 1)
    };

    HashHistory.prototype.onchange = function onchange(cb) {
      if (cb === void 0) cb = noop;

      on('hashchange', cb);
    };

    HashHistory.prototype.normalize = function normalize() {
      var path = this.getCurrentPath();

      path = replaceSlug(path);

      if (path.charAt(0) === '/') {
        return replaceHash(path)
      }
      replaceHash('/' + path);
    };

    /**
     * Parse the url
     * @param {string} [path=location.herf]
     * @return {object} { path, query }
     */
    HashHistory.prototype.parse = function parse(path) {
      if (path === void 0) path = location.href;

      var query = '';

      var hashIndex = path.indexOf('#');
      if (hashIndex >= 0) {
        path = path.slice(hashIndex + 1);
      }

      var queryIndex = path.indexOf('?');
      if (queryIndex >= 0) {
        query = path.slice(queryIndex + 1);
        path = path.slice(0, queryIndex);
      }

      return {
        path: path,
        file: this.getFile(path, true),
        query: parseQuery(query)
      }
    };

    HashHistory.prototype.toURL = function toURL(path, params, currentRoute) {
      var local = currentRoute && path[0] === '#';
      var route = this.parse(replaceSlug(path));

      route.query = merge({}, route.query, params);
      path = route.path + stringifyQuery(route.query);
      path = path.replace(/\.md(\?)|\.md$/, '$1');

      if (local) {
        var idIndex = currentRoute.indexOf('?');
        path =
          (idIndex > 0 ? currentRoute.substr(0, idIndex) : currentRoute) + path;
      }

      return cleanPath('#/' + path)
    };

    return HashHistory;
  }(History));

  var HTML5History = (function (History$$1) {
    function HTML5History(config) {
      History$$1.call(this, config);
      this.mode = 'history';
    }

    if (History$$1) HTML5History.__proto__ = History$$1;
    HTML5History.prototype = Object.create(History$$1 && History$$1.prototype);
    HTML5History.prototype.constructor = HTML5History;

    HTML5History.prototype.getCurrentPath = function getCurrentPath() {
      var base = this.getBasePath();
      var path = window.location.pathname;

      if (base && path.indexOf(base) === 0) {
        path = path.slice(base.length);
      }

      return (path || '/') + window.location.search + window.location.hash
    };

    HTML5History.prototype.onchange = function onchange(cb) {
      if (cb === void 0) cb = noop;

      on('click', function (e) {
        var el = e.target.tagName === 'A' ? e.target : e.target.parentNode;

        if (el.tagName === 'A' && !/_blank/.test(el.target)) {
          e.preventDefault();
          var url = el.href;
          window.history.pushState({
            key: url
          }, '', url);
          cb();
        }
      });

      on('popstate', cb);
    };

    /**
     * Parse the url
     * @param {string} [path=location.href]
     * @return {object} { path, query }
     */
    HTML5History.prototype.parse = function parse(path) {
      if (path === void 0) path = location.href;

      var query = '';

      var queryIndex = path.indexOf('?');
      if (queryIndex >= 0) {
        query = path.slice(queryIndex + 1);
        path = path.slice(0, queryIndex);
      }

      var base = getPath(location.origin);
      var baseIndex = path.indexOf(base);

      if (baseIndex > -1) {
        path = path.slice(baseIndex + base.length);
      }

      return {
        path: path,
        file: this.getFile(path),
        query: parseQuery(query)
      }
    };

    HTML5History.prototype.toURL = function toURL(path, params, currentRoute) {
      var local = currentRoute && path[0] === '#';
      var route = this.parse(path);

      route.query = merge({}, route.query, params);
      path = route.path + stringifyQuery(route.query);
      path = path.replace(/\.md(\?)|\.md$/, '$1');

      if (local) {
        path = currentRoute + path;
      }

      return cleanPath('/' + path)
    };

    return HTML5History;
  }(History));

  function routerMixin(proto) {
    proto.route = {};
  }

  var lastRoute = {};

  function updateRender(vm) {
    vm.router.normalize();
    vm.route = vm.router.parse();
    body.setAttribute('data-page', vm.route.file);
  }

  function initRouter(vm) {
    var config = vm.config;
    var mode = config.routerMode || 'hash';
    var router;

    if (mode === 'history' && supportsPushState) {
      router = new HTML5History(config);
    } else {
      router = new HashHistory(config);
    }

    vm.router = router;
    updateRender(vm);
    lastRoute = vm.route;

    router.onchange(function (_) {
      updateRender(vm);
      vm._updateRender();

      if (lastRoute.path === vm.route.path) {
        vm.$resetEvents();
        return
      }

      vm.$fetch();
      lastRoute = vm.route;
    });
  }

  function eventMixin(proto) {
    proto.$resetEvents = function () {
      scrollIntoView(this.route.path, this.route.query.id);
      getAndActive(this.router, 'nav');
    };
  }

  function initEvent(vm) {
    // Bind toggle button
    btn('button.sidebar-toggle', vm.router);
    // Bind sticky effect
    if (vm.config.coverpage) {
      !isMobile && on('scroll', sticky);
    } else {
      body.classList.add('sticky');
    }
  }

  function loadNested(path, file, next, vm, first) {
    path = first ? path : path.replace(/\/$/, '');
    path = getParentPath(path);
    if (!path) {
      return
    }
    if (file.indexOf('side') >= 0) {
      curPath['s'] = path;
    } else if (file.indexOf('nav') >= 0) {
      curPath['n'] = path;
    }
    console.log('path', path);
    get(vm.router.getFile(path + file))
      .then(next, function (_) {
        return loadNested(path, file, next, vm);
      });
  }

  function fetchMixin(proto) {
    var last;
    proto._fetch = function (cb) {
      var this$1 = this;
      if (cb === void 0) cb = noop;

      var ref = this.route;
      var path = ref.path;
      var ref$1 = this.config;
      var loadNavbar = ref$1.loadNavbar;
      var loadSidebar = ref$1.loadSidebar;
      console.log('fetch')
      // debugger
      // Abort last request
      last && last.abort && last.abort();

      last = get(this.router.getFile(path), true);

      // Current page is html
      this.isHTML = /\.html$/g.test(path);

      var loadSideAndNav = function () {
        if (!loadSidebar) {
          return cb()
        }

        var fn = function (result) {
          this$1._renderSidebar(result);
          cb();
        };

        // Load sidebar
        console.log('load')
        loadNested(path, loadSidebar, fn, this$1, true);
      };

      // Load main content
      last.then(function (text, opt) {
          this$1._renderMain(text, opt);
          loadSideAndNav();
        },
        function (_) {
          this$1._renderMain(null);
          loadSideAndNav();
        });

      // Load nav
      loadNavbar &&
        loadNested(path, loadNavbar, function (text) {
          return this$1._renderNav(text);
        }, this, true);
    };

    proto._fetchCover = function () {
      var this$1 = this;

      var ref = this.config;
      var coverpage = ref.coverpage;
      var root = getParentPath(this.route.path);
      var path = this.router.getFile(root + coverpage);

      if (this.route.path !== '/' || !coverpage) {
        this._renderCover();
        return
      }

      this.coverIsHTML = /\.html$/g.test(path);
      get(path)
        .then(function (text) {
          return this$1._renderCover(text);
        });
    };

    proto.$fetch = function (cb) {
      var this$1 = this;
      if (cb === void 0) cb = noop;

      this._fetchCover();
      this._fetch(function (result) {
        this$1.$resetEvents();
        callHook(this$1, 'doneEach');
        cb();
      });
    };
  }

  function initFetch(vm) {
    var ref = vm.config;
    var loadSidebar = ref.loadSidebar;

    // server-client renderer
    if (vm.rendered) {
      var activeEl = getAndActive(vm.router, '.sidebar-nav', true, true);
      if (loadSidebar && activeEl) {
        activeEl.parentNode.innerHTML += window.__SUB_SIDEBAR__;
      }
      vm._bindEventOnRendered(activeEl);
      vm._fetchCover();
      vm.$resetEvents();
      callHook(vm, 'doneEach');
      callHook(vm, 'ready');
    } else {
      vm.$fetch(function (_) {
        return callHook(vm, 'ready');
      });
    }
  }

  function initMixin(proto) {
    proto._init = function () {
      var vm = this;
      vm.config = config || {};

      initLifecycle(vm); // Init hooks
      initPlugin(vm); // Install plugins
      callHook(vm, 'init');
      initRouter(vm); // Add router
      initRender(vm); // Render base DOM
      initEvent(vm); // Bind events
      initFetch(vm); // Fetch data
      callHook(vm, 'mounted');
    };
  }

  function initPlugin(vm) {
    [].concat(vm.config.plugins).forEach(function (fn) {
      return isFn(fn) && fn(vm._lifecycle, vm);
    });
  }



  var util = Object.freeze({
    cached: cached,
    hyphenate: hyphenate,
    merge: merge,
    isPrimitive: isPrimitive,
    noop: noop,
    isFn: isFn,
    inBrowser: inBrowser,
    isMobile: isMobile,
    supportsPushState: supportsPushState,
    parseQuery: parseQuery,
    stringifyQuery: stringifyQuery,
    getPath: getPath,
    isAbsolutePath: isAbsolutePath,
    getParentPath: getParentPath,
    cleanPath: cleanPath
  });

  var initGlobalAPI = function () {
    window.Docsify = {
      util: util,
      dom: dom,
      get: get,
      slugify: slugify
    };
    window.DocsifyCompiler = Compiler;
    window.marked = marked;
    window.Prism = prism;
  };

  /**
   * Fork https://github.com/bendrucker/document-ready/blob/master/index.js
   */
  function ready(callback) {
    var state = document.readyState;

    if (state === 'complete' || state === 'interactive') {
      return setTimeout(callback, 0)
    }

    document.addEventListener('DOMContentLoaded', callback);
  }

  function Docsify() {
    this._init();
  }

  var proto = Docsify.prototype;

  initMixin(proto);
  routerMixin(proto);
  renderMixin(proto);
  fetchMixin(proto);
  eventMixin(proto);

  /**
   * Global API
   */
  initGlobalAPI();

  /**
   * Version
   */
  Docsify.version = '4.3.12';

  /**
   * Run Docsify
   */
  ready(function (_) {
    return new Docsify();
  });

}());